RICH, Judge.
This appeal is from the decision of the Patent Office Board of Appeals affirming the rejection of claims 1-19 in appellants' application serial No. 469, 895, filed July 6, 1965, as a continuation-in-part of their application serial No. 168,548, filed January 24, 1962. We affirm.
The Subject Matter Claimed
Appellants claim certain hydrocarbon cracking processes employing "dual-exchanged," crystalline, aluminosilicate zeolites as...
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