SMITH, Judge.
This appeal arises from the affirmance by the Board of Appeals of the examiner's rejection of claims 4 through 9 of appellants' application, Serial No. 567,663, filed February 24, 1956, for a patent on an "Improved Method for Molding Expandable Thermoplastic Resinous Materials and Molded Articles Thereby Obtained."
The improvement disclosed and claimed is essentially the molding of expandable or so called "foamable" thermoplastic
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