JACKSON, Judge.
This is an appeal from a decision of the Board of Appeals of the United States Patent Office affirming that of the Primary Examiner finally rejecting all of the claims 16 to 23, inclusive, of an application for a patent, serial No. 549,811, filed August 16, 1944, alleging new and useful improvements "For Polythic Polyglycol Polybasic Acid Polymer."
The claims read as follows:
"16. Process which comprises reacting an akaline polysulfide...
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