Patent Office. To amend sec. 52 of judicial code and other statutes affecting procedure in Patent Office, hearing, 69th Congress, 1st session, on H. R. 6252 and H. R. 7087, being, respectively, bill to amend sec. 52 of judicial code, and bill amending statutes as to procedure in Patent Office and in courts with regard to granting of letters patent for inventions and with regard to interfering patents, Feb. 4, 1926.

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