Handbook of Patents

abandoned aeroplanes affirmed CCA amendment apparatus assignment bud sport CCA 9 CCPA Chapter chemical patents circuit cited claims combination Commissioner of Patents compound constitute contributory infringement Corp DC N.Y. decision design drawings design patent device disclaimer disclosed disclosure discovery effect Electric elements estoppel fact file wrapper flying-machine granted GUBELMANN held Ibid illustrated improvement industry invalid inventor involved issue letters patent license machine manufacture material means mechanical ment metal method monopoly operation original party patent application patent law patentable invention plaintiff Plant Patent Plant Patent Act prior art protection purpose question record reduction to practice reissue result royalty Rubber rudder Rules of Practice Section sheet skill specification statute steps subcombination substantially suit Supp Supreme Court tion Tri-Ergon U.S. Patent Office United States Patent USPQ utility valid vitamin vitamin D