The SciencesPatent Royalty Held Non-taxable by State, "Ethyl" Mark Protected and moreBy Sylvester J. Liddy on July 1, 1931AdvertisementABOUT 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