Skip to main content
Displaying results 1 of 6 - 6
Date Innovation City State Country Society
1938–1945 Mexican Steroid Hormone Industry University Park PA USA ACS
1936 The Beckman pH Meter Pasadena USA ACS
1929-1941 San Antonio River Walk & Flood Control System San Antonio TX USA ASCE
1931 Grain Aeration Ames IA USA ASABE
1931 Pickup Forage Harvester Madison WI USA ASABE
1937 Magma Copper Mine Air Conditioning System AZ USA ASME
Displaying results 1 of 6 - 6

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

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