Cotter v. New Haven Copper Co.

Shipman, D. J.

This is a bill in equity to restrain the defendants from the alleged infringement of reissued letters patent, dated October 16, 1877, to Andrew O’Neil, assignor to Samuel A. Cotter, for an improvement in preparing sheet copper for boilers and other vessels. The original patent was granted to Mr. O’Neil, as inventor, on April 6, 1869.

Prior to the date of the original patent, tinned sheet copper for the manufacture of culinary utensils was furnished to the coppersmith in the form of a soft sheet of copper tinned on one side, and the copper side discolored by the action of the heat…