Parker v. Haworth

OPINION OF

THE COURT.

This action is brought, charging the defendant with a viola*1136tion of the plaintiff’s patent for a percussion and reaction water wheeli The defendant pleaded not guilty. The jury being sworn, the plaintiff offered an exemplification of his patent, containing certain assignments, in evidence, which was objected to by defendant, on two grounds: (1) That there is no proof of the original assignment to McElvey; and (2) that there is no proof that McElvey was administrator, as he assumed to be.

The assignment of a patent in whole or in part, is authorized by act of congress, and it…