GRAHAM, Presiding Judge.
An application for a patent on a floor polishing machine was filed in the Patent Office by the appellant, on May 2, 1927. The specification and drawings disclosed the machine to be used in polishing floors. It is succinctly described in the decision of the Board of Appeals as follows:
"Applicant's device is intended for use in polishing floors. It comprises a rotatable brush and an electric motor for driving the same. A handle extends...
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