Patents : hearings before the Committee on Patents, House of Representatives, Seventy-second Congress, first session : on general revision of patent laws
Print Book, English, 1932
U.S. Govt. Print. Off., Washington, D.C., 1932
iii, 321 pages : illustrations ; 24 cm
1326964778
William I. Sirovich, chairman
Hearings held: January 25-28 and February 16-17, 1932