MARKEY, Chief Judge.
Appeal from the decision of the Patent and Trademark Office (PTO) Board of Appeals (board) sustaining rejections of claims 1-6 under 35 U.S.C. § 103 of appellant's application serial No. 354,715, filed April 26, 1973, for "Purification of Gaseous Hydrogen Chloride."
The Invention
The invention relates to a dry process for the removal of hydrogen fluoride (HF) contaminant from...
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