Title: Patent extension
Subtitle: Hearings before the Subcommittee on Patents, Trademarks, and Copyrights of the Committee on the Judiciary, United States Senate, Eighty-fourth Congress, second session, on S. 116 and H.R. 2128, an act to authorize the extension of patents under certain conditions. May 4 and June 13, 1956.
Subjects: Patent laws and legislation
Places: United States