Butz Thermo-Electric Regulator Co. v. Jacobs Electric Co.

The complainant files its bill to restrain the alleged infringement of letters patent No. 222,284, issued to Julien M. Bradford and his assignee, Z. H. Harmon, December 2, 1879, for “improvement in electric heat and vapor governors for spinning and weaving rooms,” and as assignee of the patentees. The defendant, by its answer, (1) asserts that Bradford was not the original inventor of the alleged improvements purporting to be embraced in such letters patent, but that such alleged invention had previously been patented by certain letters patent of the United States, and of the kingdom of Great…