Carbice Corp. of America v. American Patents Development Corp. , 51 S. Ct. 334 ( 1931 )
Keystone Driller Co. v. General Excavator Co. , 54 S. Ct. 146 ( 1933 )
Philad Co. v. Lechler Laboratories, Inc. , 107 F.2d 747 ( 1939 )
Leitch Manufacturing Co. v. Barber Co. , 58 S. Ct. 288 ( 1938 )