Stevenson v. Lamson Corp.

HARRIS, Chief Judge.

Plaintiff, owner of a patent, No. 2,815,846, issued upon a conveyor device used for controlling articles traveling over rollers so as to build a prearranged pattern on the pallet to be loaded by the total mechanism by means of a maneuverable obstruction on the roller passage, has brought this suit against defendant for infringement. By stipulation, the parties limited the action to a consideration of claims 1, 14 and 18, conceding that infringement exists if these claims are held valid. The issues in the case are fundamentally simple.

Defendant contends the patent is…