In Re Davis

O’CONNELL, Judge.

The appeal in this case is from the decision of the Board of Appeals of the United States Patent Office affirming the Primary Examiner in his rejection of all of the claims, 14 — 22, in appellants’ application for a patent on a fuel blend adapted for use in a rich fuel mixture and the improvement in a method comprising feeding the mixture to a supercharged engine at high power output in the operation of aircraft.

The references relied upon were the patent to Greensfelder et al., 2,204,215, granted June 11, 1940, and the Pilots’ Power-plant Manual, Civil Aeronautics Bulletin,…