Other lower court cases stating so are National Lead Co. v. Western Lead Co., 324 F.2d 539 (9th Cir. 1963); Davison Chem. Corp. v. Joliet Chems., Inc., 179 F.2d 793 (7th Cir. 1950); Loew’s Drive-In Theatres v. Park-In Theatres, 174 F.2d 547 (1st Cir. 1949).
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Other lower court cases stating so are National Lead Co. v. Western Lead Co., 324 F.2d 539 (9th Cir. 1963); Davison Chem. Corp. v. Joliet Chems., Inc., 179 F.2d 793 (7th Cir. 1950); Loew’s Drive-In Theatres v. Park-In Theatres, 174 F.2d 547 (1st Cir. 1949).