Lindbladh Corp. v. C. E. Sheppard Co.

GALSTON, District Judge.

This is a patent infringement suit in which infringement is alleged of letters patent No. 1,813,940 for a ruling machine granted July 14,1931, on an application filed on September 17, 1921, and of patent No. 1,609,648 for a ruling apparatus granted December 7, 1926, on an application filed August 3, 1923. The inventor of these devices is Harmon E. Lind-bladh, plaintiff’s assignor.

The inventions covered by these patents relate to improvements in duplex ruling machines, in which sheets, after having parallel *447lines drawn, parallel to one another and to the edges of the…