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1993 Index to the U.S. Patent Classification i (1993)

handle is hein.intprop/inuspacl1993 and id is 1 raw text is: 







              INDEX TO THE


         U.S. PATENT


CLASSIFICATION


                    SYSTEM



                    DECEMBER 1993


U.S. DEPARTMENT OF COMMERCE
      Ronald H. Brown, Secretary


      U.S. Patent and Trademark Office
            Bruce A. Lehman
         Assistant Secretary and
 Commissioner of Patents and Trademarks


Office of Classification Support

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