HATFIELD, Associate Judge.
This is an appeal from the decision of the Board of Appeals of the United States Patent Office affirming the decision of the Primary Examiner rejecting claims 1 to 7, inclusive, and 17 in appellant's application for a patent for an alleged invention relating to a method of preparing pure zinc compounds from impure zinc compounds.
Claims 1, 3, and 6 are sufficiently illustrative of the appealed claims. They read:
"1. Process...
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