Displaying results 81 of 100 - 199
Date Image Innovation City State Country
1934 Pioneer Zephyr Pioneer Zephyr Chicago IL USA
1932 Radio City Music Hall Hydraulically Actuated Stage Radio City Music Hall Hydraulically Actuated Stage New York NY USA
1930 Fusion-welded Test Boiler Drum Chattanooga TN USA
1929 Kaplan Turbine Muhlenberg PA USA
1929 Rocky River Pumped-storage Hydroelectric Plant Rocky River Pumped-storage Hydroelectric Plant Hartford CT USA
1928 Fairbanks Exploration Company Gold Dredge No. 8 Fairbanks Exploration Company Gold Dredge No. 8 Fairbanks AK USA
1928 Cooperative Fuel Research Engine Waukesha WI USA
1926 Corning Ribbon Machine Dearborn MI USA
1925 Pratt & Whitney Wasp A, R-1300 (R-1340) Pratt & Whitney R-1340 Wasp Radial Engine Windsor Locks CT USA
1924 Bay City Walking Dredge Bay City Walking Dredge Naples FL USA
1922 First Ram-Type Blowout Preventer BOP Houston TX USA
1922 LeTourneau "Mountain Mover" Scraper LeTourneau "Mountain Mover" Scraper Longview TX USA
1921 Wright Field 5-foot Wind Tunnel Wright Field 5-foot Wind Tunnel Wright-Patterson Air Force Base OH USA
1920 Quincy Mining Company No. 2 Mine Hoist Quincy Mining Company No. 2 Mine Hoist Hancock MI USA
1920 Holland Tunnel Ventilation System New York NY USA
1920 Ljungstrom Air Preheater Ljungstrom Air Preheater Stockholm Sweden
1920 A.O. Smith Automatic Frame Plant A.O. Smith Automatic Frame Plant Milwaukee, WI USA
1918 East Wells Onieda Street Power Plant Milwaukee WI USA
1918 Holt Caterpillar Tractor Holt Caterpillar Tractor Stockton CA USA
1918 Mount Wilson Observatory, 100-inch Hooker Telescope Pasadena CA USA

We hope you enjoyed this essay.

Please support America's only magazine of the history of engineering and innovation, and the volunteers that sustain it with a donation to Invention & Technology.

Donate

Help us save
Stay informed - subscribe to our newsletter.
The subscriber's email address.