Registration and protection of trademarks. : Hearing before Subcommittee No. 3 of the Committee on the Judiciary, House of Representatives, eighty-seventh Congress, first session, on H. R. 4333, a bill to amend the act entitled "An act to provide for the registration ahd protection of trademarks used in commerce, to carry out the provisions of certain international conventions, and for other puposes, approved July 5, 1946, as amended.