Crom v. Cement Gun Co.

KIRKPATRICK, District Judge.

This is an action for infringement of U. S. patent No. 1,776,941, issued to Crom, one of the plaintiffs, and, in the alternative, for royalties under a license. For all purposes of this controversy the two plaintiffs, Crom and National Gunite, are one, and will be referred to in the singular wherever convenient. The patent is for a ditch trimmer- — -a very simple machine, the purpose of which is to prepare roughly excavated irrigation ditches or canals for lining with cement, by cutting the sides to the form of a perfectly smooth semicircle. The defendant has used…