BALDWIN, Judge.
This appeal is from the decision of the Patent Office Board of Appeals, affirming the examiner's rejection under 35 U.S.C. § 103 of claims 1, 3-7 and 9-12, all of the claims in appellants' application.
The Invention
Appellants' invention concerns the addition of a particular type of alumina to polymers and copolymers of polyvinyl chloride. Product claim 7 is sufficiently representative...
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