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Patent Grant Optical Character Recognition (OCR) Text (1920 - 1979)
Contains patent grant text produced by an Optical Character Recognition (OCR) process using selected U.S. Patent Grant Image data from January 1920 through December 1979 as... -
Patent Grant Optical Character Recognition (OCR) Text (1920 - 1979)
Contains patent grant text produced by an Optical Character Recognition (OCR) process using selected U.S. Patent Grant Image data from January 1920 through December 1979 as...