1. Patents, hearings, 77th Congress, 2d session, on S. 2303, to provide for use of patents in interest of national defense or prosecution of war, S. 2491, to emend patent laws, to prevent suppression of inventions, to promote progress of science and useful arts, and for other purposes, Aug. 18-21, 1942. Bookmark Corporate/Agency Authors: Patents Commitee, Senate, and Congress Publisher: Patents Commitee Date: 1942 SuDoc number: Y 4.P 27/2:P 27/5/pt.9