GENERAL REVISION AND AMENDMENT HEARING BEFORE THE COMMITTEE ON PATENTS HOUSE OF REPRESENTATIVES SEVENTY-SECOND CONGRESS FIRST SESSION- ON H. R. 10152, H. R. 10153, H. R. 10154, H. R. 10155, COMMITTEE ON PATENTS HOUSE OF REPRESENTATIVES SEVENTY-SECOND CONGRESS, FIRST SESSION WILLIAM I. SIROVICH, New York, Chairman FRITZ G. LANHAM, Texas. RANDOLPH PERKINS, New Jersey. |