Uhlmann v. Bartholomæ & Leicht Brewing Co.

This suit is brought for infringement of letters patent No. 378,379, granted February 21, 1888, to complainants, as assignees of Heinrich Stockheim, of Germany, for a beer filtering process. The bill prays for an injunction and accounting. It is averred in the answer that Otto Zwietusch was the original and first inventor, and that he sold an apparatus which was used in carrying it out, to the defendants. Zwietusch guarantied the defendants against damages resulting from the use of the apparatus and process, and has thus far defended the suit at his own expense. It is not denied that the…