Function or abstract effect of a machine
Defined in 1 dictionary — Case Law
Definitions from Case Law
From 56 U.S. 252 - Erastus Corning and John Winslow v. Peter a Burden · 1853Most cited · 281 citing opinions
But it is well settled that a man cannot have a patent for the function or abstract effect of a machine, but only for the machine which produces it.