Patent Appeal No. 4077. February 27, 1939. Appeal from the Board of Patent Appeals, Interference No. 73,230. Interference proceeding between Fritz Hansgirg and Frank R. Kemmer. From a decision of the Board of Appeals of the United States Patent Office affirming decision of the Examiner of Interferences, the former appeals. Reversed. Brown, Critchlow Flick, of Pittsburgh, Pa. (Jo. Baily Brown and Fulton B. Flick, both of Pittsburgh, Pa., of counsel), for appellant. H.C. Bierman, of New York City,