Edwin L. Wiegand Co. v. Harold E. Trent Co. , 122 F.2d 920 ( 1941 )
Spring Steels, Inc. v. Molloy , 400 Pa. 354 ( 1960 )
AM. WINDOW CLEANING CO. OF SPRINGFIELD, MASS. v. Cohen , 343 Mass. 195 ( 1961 )