Ingersoll v. Delaware & Hudson Co.

MANTON, Circuit Judge.

The District Court found elaim 32 of the patent to Ingersoll, No. 1,339,395, claims 16 and 17 of Ingersoll patent, No. 1,383,633, and claims 16,17, and 21 of Ingersoll patent, No. 1,547,-155, valid and infringed in these suits for infringement of four patents. There were a number of other claims sued on, but, since the plaintiffs have not appealed from the dis-allowance of such claims as infringed, it is unnecessary to consider them here.

The patents relate to improvements in, auxiliary or booster engines used to aid railroad locomotives in starting, or while running at…