. . . . . . . . . . . . . . "Patent and Trademark Office, U.S. Department of Commerce hearing before the Subcommittee on Courts, Civil Liberties, and the Administration of Justice of the Committee on the Judiciary, House of Representatives, Ninety-eighth Congress, first session, on Patent and Trademark Office, U.S. Department of Commerce, April 20, 1983"@en . . "Patent and Trademark Office, U.S. Department of Commerce : hearing before the Subcommittee on Courts, Civil Liberties, and the Administration of Justice of the Committee on the Judiciary, House of Representatives, Ninety-eighth Congress, first session ... April 20, 1983"@en . . . "Patent and Trademark Office, U.S. Department of Commerce hearing before the Subcommittee on Courts, Civil Liberties, and the Administration of Justice of the Committee on the Judiciary, House of Representatives, Ninety-eighth Congress, first session ... April 20, 1983"@en . . .