Celluloid Manuf'g Co. v. Tower

This is a bill to restrain infringement of letters patent No. 210,780, and dated December 10, 1878, granted to the complainant as assignee of John W, Hyatt, for an improvement in piano keys. The claims of the patent are as follows:

“(1) As a new article of manufacture, a blank key-board covered with a continuous strip or roll of plastic composition, substantially as specified. (2) The within-described process of forming piano or analogous keys, which consists in covering a key-blank with a strip of plastic material, and thou cutting out each key from the coated blank, substantially as…