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 Browse Inventions by decade patented: 1940 - 1949 Radio Distance and Direction Indicator Luis Walter Alvarez Catalytic Cracking Donald L. Campbell Magnetic Recording Marvin Camras Electrophotography (Xerox) / Instant Copying Chester F. Carlson Multiplane Camera Walt Disney Photography Harold E. Edgerton Solid Fuel Rockets Robert Hutchings Goddard Aircraft Stall Warning Device Leonard Michael Greene Polyurethane William Edward Hanford Audio Signals William R. Hewlett Electron Microscope James Hillier Polyurethane Donald Fletcher Holmes Transparent Silica J. Franklin Hyde Titanium William Kroll Catalytic Cracking Homer Z. Martin Penicillin Andrew J. Moyer Catalytic Cracking Eger V. Murphree Television Louis W. Parker Teflon Roy J. Plunkett Cortisone Lewis Hastings Sarett Helicopter Igor I. Sikorsky Magnetron Percy Lebaron Spencer Vitamins Max Tishler Catalytic Cracking Charles W. Tyson Flying Wing Plane; All-Metal High-Wing Monocoque Airplane (Vega) John Northrop Jet Engine Frank Whittle Streptomycin Selman Waksman Ballpoint Pen Laszlo Josef Biro Langmuir-Blodgett films Katharine Burr Blodgett Air Conditioner for Vehicles Frederick McKinley Jones Styrofoam Brand Foam Otis Ray McIntire  |
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