Diamond Match Co. v. Sun Match Corp.

(after stating the facts as above). It may be, and we think is, admitted that in its entirety the combination of parts producing a mechanism capable of doing what this machine does is an invention of importance, and both by its commercial success and the surmounted difficulties .of co-ordinate operation, deserving of that sympathetic consideration, usually expressed by granting a wide rangfe of equivalents.

This doctrine needs no citation for its support, but neither do other and important considerations, viz. that the patent is not on a new product or composition of matter, for match books…