EDGERTON, Associate Justice.
Appellants applied to the Patent Office for a patent on an opalescent lacquer, the process of making it, and a sheet of metal coated with it. The Office rejected the claims, for lack of invention, and appellants brought a bill in equity against the Commissioner of Patents under R.S. Sec. 4915, 35 U.S.C.A. § 63. The District Court sustained the Patent Office and dismissed the bill.
It appears that before appellants' lacquer...
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