Curran v. Burdsall

This is a bill to restrain the alleged infringement by defendant of letters patent No. 76,661, dated July 7; 1868, issued to Richard P. Johnson and Eli J. Sumner, for an improvement in lumber-driers, which it is claimed has been assigned to complainants. *836The bill also charges the infringement of three other patents, claimed to be owned by complainants, but as no proof in regard to them has been put into the record no further notice will be taken of them. No question is made as to complainants’ title to the Johnson and Sumner patent.

The main matter of defense relied upon by defendant is that…