The SciencesA. C. Radio Set Patent Adjudged Invalid, Wiring Plan Patent Sustained and moreBy Sylvester J. Liddy on June 1, 1932AdvertisementABOUT THE AUTHOR(S)Recent Articles by Sylvester J. LiddyTracking Down Your Trade Mark TitleForeign Patent Licensing Corporations, Vapex Mark UpheldChicken Capsules in Patent Suit, Position of Trade Mark and more