equivalents
Defined in 1 dictionary — Case Law
Definitions from Case Law
From 82 U.S. 187 - Gould v. Rees · 1872Most cited · 132 citing opinions
a patentee in such a case may substitute another ingredient for any one of the ingredients of his invention if the ingredient substituted performs the same function as the one omitted and was well known at the date of his patent as a proper substitute for the one omitted in the patented combination.