Industrial innovation and patent and copyright law amendments: hearings before the Subcommittee on Courts, Civil Liberties, and the Administration of Justice of the Committee on the Judiciary, House of Representatives, Ninety-sixth Congress, second session, on H.R. 6033, H.R. 6934, H.R. 3806, H.R. 2414 ... April 3, 15, 17, 22, 24, May 8, and June 9, 1980