American Diamond Rock-Boring Co. v. Sheldon

These causes have been reheard, pursuant to the granting of the motion for that purpose. 24 Fed. Rep. 374. It still appears that Leschot made a valuable invention, which he patented in original letter No. 89,235, dated July 14,1863, the substance and principle of which the defendants have made use of, as has been be*769foro held in these eases. 17 Blatchf. 208, 303; 2 Fed. Rep. 353. The patent was reissued in No. 2,609, dated October 26, 1869, to his assignee. The material question now is whether the reissue, or any part of it, is valid to cover tiiis infringement.

The original had a single claim…