GARRETT, Chief Judge.
This is an appeal from the decision of the Board of Appeals of the United States Patent Office, affirming the rejection by the Primary Examiner of claims 55 and 56 of appellants' application for patent, Serial No. 494,222, filed July 10, 1943, entitled "For Improvements in Sealing Means for Mixers or the Like."
While the claims are not limited to sealing means for a concrete mixer, that appears to be the only type of mixer mentioned eo...
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