Ronning Machinery Co. v. Caterpillar Tractor Co.

LINDLEY, District Judge.

Plaintiffs appeal from a judgment dismissing their complaint for want of equity. They alleged infringement of their patents Winsor 2,020,271, Ronning Reissue 19,846, Ronning 1,658,353, Ronning 1,883,403 and Arndt 2,147,631. They rely principally upon Winsor. The court held the Winsor and Ronning Reissue patents not infringed and the others invalid.

The Winsor patent was before the District Court in Galion Iron Works & Mfg. Co. v. Beckwith Mach. Co., 25 F.Supp. 73 and the Third Circuit Court of Appeals on appeal in 105 F.2d 941. The trial court there held the patent not…