U.S. Dept. of Commerce, U.S. Patent and Trademark Office,
United States. Patent and Trademark Office.
Text search and retrieval training manual for the Automated Patent System (APS). Text search training workbook for public users of the Automated Patent System (APS).
Text search and retrieval training manual for the Automated Patent System (APS). Text search training workbook for public users of the Automated Patent System (APS).
Text search and retrieval training manual for the Automated Patent System (APS). Text search training workbook for public users of the Automated Patent System (APS).
United States. Patent and Trademark Office.