Otis Elevator Co. v. 570 Building Corp.

SWAN, Circuit Judge.

This is a suit for patent infringement brought by Otis Elevator Company as assignee of patent No. 1,694,823 to Larson, application filed May 24, 1922, and patent No. 1,904,647 to Lindquist et al., application filed May 21, 1925. The patents relate to electric elevators of the automatic push button type. Claims 1 to 29 inclusive of the Larson patent and claims 4 to 6 inclusive, 9 to 14 inclusive, 23, 27, 28 and 76 *700to 84 inclusive of the Lindquist patent were held valid and infringed by each of the defendants. The defendant 570 Building Corporation is the owner of an…