Consolidated Electrodynamics Corporation, a Corporation v. Midwestern Instruments, Inc., a Corporation

BREITENSTEIN, Circuit Judge.

Appellant, Consolidated Electrodynamics Corporation, sued appellee, Midwestern Instruments, Inc., 1 alleging contributory infringement of its United States Patent No. 2,599,661 which is known as the Richardson patent and which covers a “suspension galvanometer and magnet assembly.” Consolidated had granted Midwestern a nonexclusive license to make and sell galvanometers and magnet assemblies under this patent. Midwestern then manufactured and sold certain galvanometers and a galvanometer carrier and paid royalties thereon. Consolidated returned the royalties paid…