PER CURIAM.
The plaintiff does not profess to have been the first to invent a hinged braking and lifting "flap" attached to the wing of an aeroplane, and in view of the prior art he would have been wholly unwarranted in doing so, for such contrivances had become common before his filing date. Piau, French Patent No. 441,523 (1912); Lewkowicz, No. 1,238,031 (1917); Fairey, No. 1,359,345 (1920); Handley-Page, No. 1,422,616 (1922); Wright, No. 1,504,663 (1921 —...
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