Kaplan v. Helenhart Novelty Corporation , 182 F.2d 311 ( 1950 )
Nicholas L. Etten and Chamberlain Corporation v. Lovell Manufacturing Company and Walter L. Kauffman, 2d , 225 F.2d 844 ( 1955 )
Graham v. John Deere Co. of Kansas City , 86 S. Ct. 684 ( 1966 )
Walker Process Equipment, Inc. v. Food MacHinery & Chemical Corp. , 86 S. Ct. 347 ( 1965 )