Seneca Glass Company was a glass manufacturer that began in Fostoria, Ohio, in 1891. At one time it was the largest manufacturer of blown tumblers (drinking glasses) in the United States.
National Lockwasher Co. v. George K. Garrett Co., 137 F.2d 255 (3d Cir. 1943), [1 ] is one of the earliest or the earliest federal court decision to hold that it is patent misuse for a patentee to require licensees not to use a competitive…