Roberts v. Schreiber

Strong, 0. J.

The bill charges infringement of two patents belonging to the complainants. The first is a process patent (No. 6,258) granted on the sixth day of January, 1875, to Edward A. L. Roberts, a re-issue of letters patent, (No. 5,434,) which was itself a re-issue of original letters, dated May 20, 1866, granted to said Roberts, and numbered 59,936. The original was for a new and useful improvement in methods of increasing the capacity of oil wells, described in the specifications and drawings. The specification of the re-issued patent No. 6,258, upon which this suit is partly founded,…