Gold & Stock Telegraph Co. v. Wiley

This is a bill in equity, founded upon the alleged infringment by the defendant of reissued -letters patent No. 3,810, granted January 25, 1870, to the plaintiff, as assignee of Edward A. Calahan, and of original letters patent granted July 27, 1871, to Henry Van Hoevenbergh, as inventor. The original Calahan patent was granted April 21, 1868. Each patent is for an improvement in telegraphic printing instruments particularly designed for registering the prices of stocks. The specification of the Calahan reissue describes the invention in general terms, as follows:

“It is often desired,…