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1997 Index to the U.S. Patent Classification i (1997)

handle is hein.intprop/inuspacl1997 and id is 1 raw text is: 







              INDEX TO THE


         U.S. PATENT


CLASSIFICATION


                    SYSTEM



                    DECEMBER 1997


U.S. DEPARTMENT OF COMMERCE
     William M. Daley, 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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