Tapco Products Co. v. Van Mark Products Corp‪.‬

The suit in the District Court was for infringement of the Marsh Patent No. 3,161,223, issued December 15, 1964, on a sheet metal brake, which patent had been assigned to Tapco. Appellee Van Cleave had been in the employ of Tapco when the brake was being developed. After leaving Tapcos employ he organized appellee Van Mark Products Corporation and commenced to produce a brake almost identical with the patented brake.