Keller v. Stolzenbach

Nicholas ,7. Keller, one of the plaintiffs, and Philip M. Pfeil, one of the defendants, entered into partnership on April 26, 1870, in the business of dredging and dealing in sand and gravel, the partnership lasting until April 10, 1875, when it was dissolved by-mutual consent. During the existence of the partnership Keller invented a sand and gravel separator, for which letters patent were granted to him on May 21, 1872. With his consent, and at the firm expense, the patented apparatus was put on two , boats owned by the firm, — one called the Hippopotamus, the other the Rainbow, — and was…