Heyer Duplicator Co. v. A. B. Dick Co.

The appeal involves the issue of validity and infringement of claims 2 and 18 of United States patent No. 1.526,982 to Hill, February 17,1925, for a stencil sheet.

The very ingenious presentation of the ease on behalf of appellant seems to us more plausible than sound; and while the formidable array of prior decisions of other courts, adjudicating the patent to be valid and infringed, has given ns pause lest we be influenced overmuch by these uniform holdings favorable to appelleeY contentions here, it is our best judgment that this case was properly decided by the District Court.

The generous…