161 A.2d 610 Universal Film Exchanges, Inc. v. Viking Theatre Corporation, Appellant. Supreme Court of Pennsylvania.November 18, 1959. March 22, 1960. Contracts — Assumpsit — Written contract — Rental of motion picture films — Claim for unpaid balance — Defenses — Illegality — Contemporaneous oral agreement — Subsequent oral modification — Parol Evidence Rule. In […]