Displaying results 121 of 140 - 204
Date Image Innovation City State Country
1932 Radio City Music Hall Hydraulically Actuated Stage Radio City Music Hall Hydraulically Actuated Stage New York NY USA
1934 Pioneer Zephyr Pioneer Zephyr Chicago IL USA
1935 Link C-3 Flight Trainer Link C-3 Flight Trainer Binghamton NY USA
1935 Port Washington Power Plant Port Washington Power Plant Milwaukee WI USA
1937 (Image not displayed) Magma Copper Mine Air Conditioning System AZ USA
1938 Hydromatic Propeller Hydromatic Propeller Windsor Locks CT USA
1938-1948 Birome Ballpoint Pen Collection Buenos Aires Argentina
1939 David Taylor Model Basin Bethesda MD USA
1939 First practical US helicopter, pioneering the single-main-rotor concept Sikorsky VS-300 Helicopter Dearborn MI USA
1940 Thermo King© C Refrigeration Unit Thermo King© C Refrigeration Unit Minneapolis MN USA
1940 Alligator Amphibian Quantico VA USA
1941 Norfolk & Western #611, Class J Steam Locomotive Norfolk & Western #611, Class J Steam Locomotive Roanoke VA USA
1942 Grumman Wildcat “Sto-Wing” Wing-folding Mechanism Kalamazoo MI USA
1942 SS Jeremiah O'Brien SS Jeremiah O'Brien San Francisco CA USA
1943 Aberdeen Range, Aberdeen Proving Ground Aberdeen Range, Aberdeen Proving Ground Aberdeen MD USA
1943 Penn. RR GG1 Electric Locomotive #4800 Penn. RR GG1 Electric Locomotive #4800 Strasburg PA USA
1944 Icing Research Tunnel, NASA Lewis Research Center Icing Research Tunnel, NASA Lewis Research Center Cleveland OH USA
1944 Cooper-Bessemer Type GMV Integral-Angle Gas Compressor Cooper-Bessemer Type GMV Integral-Angle Gas Compressor Mount Vernon OH USA
1944 Victoria Dutch Windmill Victoria Dutch Windmill Victoria TX USA
1944 Hanford B Reactor Hanford B Reactor Sunnyside WA USA

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