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                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                  SCHEDULE 13D
                    Under the Securities Exchange Act of 1934

                          (Amendment No.____________)*

                                Merrimac Industries Inc.
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                                (Name of Issuer)

                                  Common Stock
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                         (Title of Class of Securities)

                                590262101
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                                 (CUSIP Number)

                              Lee Unterman
                              David J. Greene and Company, LLC
                              599 Lexington Avenue
                              New York, NY 10022

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           (Name, Address and Telephone Number of Person Authorized to
                       Receive Notices and Communications)

                                November 19, 2007
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             (Date of Event which Requires Filing of This Statement)

If the filing person has previously  filed a statement on Schedule 13G to report
the  acquisition  that is the subject of this  Schedule  13D, and is filing this
schedule because of Sections 240.13d-1(e),  240.13d-1(f) or 240.13d-1(g),  check
the following box [_].

NOTE:  Schedules  filed in paper format shall include a signed original and five
copies of the schedule,  including all exhibits. See Section 240.13d-7 for other
parties to whom copies are to be sent.

* The remainder of this cover page shall be filled out for a reporting  person's
initial filing on this form with respect to the subject class of securities, and
for  any  subsequent   amendment   containing   information  which  would  alter
disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the  Securities  Exchange  Act of
1934 or  otherwise  subject to the  liabilities  of that  section of the Act but
shall be subject to all other provisions of the Act (however, see the Notes).

  PERSONS WHO RESPOND TO THE COLLECTION OF INFORMATION CONTAINED IN THIS FORM
     ARE NOT REQUIRED TO RESPOND UNLESS THE FORM DISPLAYS A CURRENTLY VALID
                               OMB CONTROL NUMBER.



CUSIP No:  590262101

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1    NAMES OF REPORTING PERSONS.
     I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY).

                                David J. Greene and Company, LLC / 13-5605991

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2    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)
     (a) [_]
     (b) [X]

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3    SEC USE ONLY



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4    SOURCE OF FUNDS (SEE INSTRUCTIONS)


                        00 - funds of investment advisory clients
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5    CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
     PURSUANT TO ITEMS 2(d) OR 2(e)   [_]



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6    CITIZENSHIP OR PLACE OF ORGANIZATION

                                New York



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                   7    SOLE VOTING POWER



  NUMBER OF         0

   SHARES      _____________________________________________________________
               8    SHARED VOTING POWER
BENEFICIALLY

  OWNED BY          190,000
               -------------------------------------------------------------
    EACH       9    SOLE DISPOSITIVE POWER

  REPORTING
                    0

   PERSON      _________________________________________________________________
               10   SHARED DISPOSITIVE POWER
    WITH

                    274,600

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11   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON


                        274,600

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12   CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
     (SEE INSTRUCTIONS)

     [_]

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13   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)


                        9.38%

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14   TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)



                        IA

      --------------------------------------------------------------------------
                      *SEE INSTRUCTIONS BEFORE FILLING OUT!



CUSIP No.590262101

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Item 1.  Security and Issuer

        Merrimac Industries Inc.
        41 Fairfield Place
        West Caldwell, NJ  07007-0986

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Item 2.  Identity and Background

          (a)  David J. Greene and Company, LLC ("DJG"); Michael C. Greene
               ("MCG")is the CEO of DJG.

          (b)  599 Lexington Avenue, New York, NY 10022

          (c)  David J. Greene and Company, LLC ("DJG")is a federally registered
investment advisor engaged in the management of institutional and high net worth
client accounts. DJG serves as investment advisor to, and has voting and
investment discretion over, the managed accounts of its client, and therefore
may be deemed to be the beneficial owner of the Shares.

     (d)       During the last five years, neither DJG or MCG has been convicted
               in a criminal proceeding (excluding traffic violations
               or similar misdemeanors).

     (e)       During the last five years, neither DJG not MCG has been a party
               to a civil proceeding of a judicial or administrative body of
               competent jurisdiction as a result of which it or he was or is
               subject to a judgment, decree or final order enjoining future
               violations of, or prohibiting or mandating activities subject
               to, federal or state securities laws or finding any violation
               with respect to such laws.

     (f)       United States

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Item 3.  Source and Amount of Funds or Other Consideration


               The Shares were purchased for the managed accounts of DJG's
         clients. Funds for the purchase of the Shares reported were derived
         from the funds of DJG's investment advisory clients.
--------------------------------------------------------------------------------
Item 4.  Purpose of Transaction

     (a)       The Reporting Persons acquired the Shares for investment purposes
               in the ordinary course of business.

     (b)       In pursuing such investment purposes, the Reporting Persons may
further purchase, hold, vote, trade, dispose or otherwise deal in the Shares at
times, and in such manner, as they deem advisable to benefit from changes in
market prices of such Shares, changes in the Issuer's operations, business
strategy or prospects, or from sale or merger of the Issuer. To evaluate such
alternatives, the Reporting Persons will routinely monitor the Issuer's
operations, prospects, business development, management, competitive and
strategic matters, capital structure, and prevailing market conditions, as well
as alternative investment opportunities, liquidity requirements of the Reporting
Persons and other investment considerations. Consistent with its investment
research methods and evaluation criteria, the Reporting Persons may discuss such
matters with management or directors of the Issuer, other shareholders, industry
analysts, existing or potential strategic partners or competitors, investment
financing professionals, sources of credit and other investors. Such factors and
discussions may materially affect, and result in, the Reporting Persons'
modifying their ownership of the Shares, exchanging information with the Issuer
pursuant to appropriate confidentiality or similar agreements, proposing changes
in the Issuer's operations, governance or capitalization, or in proposing one or
more of the other actions described in subsections (a) through (j) of Item 4 of
Schedule 13D.

        The Reporting  Persons reserve the right to formulate other plans and/or
make other proposals, and take such actions with respect to their investment in
the Issuer, including any or all of the actions set forth in paragraphs (a)
through (j) of Item 4 of Schedule 13D, or acquire additional common stock of the
Issuer or dispose of all the Shares beneficially owned by them, in the public
market or privately negotiated transactions. The Reporting Persons may at any
time reconsider and change their plans or proposals relating to the foregoing.

--------------------------------------------------------------------------------
Item 5.  Interest in Securities of the Issuer

     (a)   274,600; 9.38%

     (b)   Shared voting power 190,000; shared dispositive power 274,600

     (c)   0

     (d)   N/A

     (e)   N/A

--------------------------------------------------------------------------------
Item 6.  Contracts, Arrangements, Understandings or Relationships with Respect
         to Securities of the Issuer

        There are no contracts, arrangements, understandings or relationships
(legal or otherwise) between or among the Reporting Person and any
        other person with respect to any securities of the Company
--------------------------------------------------------------------------------
Item 7.  Material to be Filed as Exhibits

        None

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SIGNATURE

     After  reasonable  inquiry and to the best of my  knowledge  and belief,  I
certify that the information  set forth in this statement is true,  complete and
correct.

 11/27/2007

--------------------------------------------------------------------------------
Date

/s/ Lee Unterman

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Signature

Lee Unterman, Chief Compliance Officer

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Name/Title

     The original  statement  shall be signed by each person on whose behalf the
statement is filed or his authorized representative.  If the statement is signed
on behalf of a person by his authorized  representative (other than an executive
officer  or  general   partner  of  the   filing   person),   evidence   of  the
representative's  authority to sign on behalf of such person shall be filed with
the  statement:  provided,  however,  that a power of attorney  for this purpose
which is already on file with the Commission may be  incorporated  by reference.
The name and any title of each person who signs the statement  shall be typed or
printed beneath his signature.

ATTENTION.  INTENTIONAL  MISSTATEMENTS  OR OMISSIONS OF FACT CONSTITUTE  FEDERAL
CRIMINAL VIOLATIONS (SEE 18 U.S.C. 1001).