RICH, Judge.
This appeal is from the decision of the Patent Office Board of Appeals affirming the rejection of claims 1, 2, 3, 6, 7, 10 and 11 of application Ser. No. 534,529, filed September 15, 1955, for "Cadmium-Bismuth Glasses."
Appellant's specification shows that his glasses are composed of three primary constituents: a cadmium compound (e. g., cadmium oxide, CdO); a bismuth compound (e. g., bismuth oxide, Bi
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