opinion: PER CURIAM.
  The findings and judgment of the trial court find full support in the record. Appellant has failed to meet the burden imposed upon a plaintiff in a Section 4915 proceeding and is not entitled to a patent.
  Affirmed.
  35 U.S.C.A. § 63; Abbott v. Coe, 71 App.D.C. 195, 197, 198, 109 F.2d 449, 451, 452; Daniels v. Coe, 73 App.D.C. 54, 58, 116 F.2d 941, 945; Morrison v. Coe, 75 U.S.App.D.C. 219, 220, 127 F.2d 737, 738.