Displaying results 1 of 4 - 4
Date Innovation City State Country Society
1952 Ditch Witch DWP Service-Line Trencher Perry OK USA ASME
1933 Graham-Hoeme Chisel Plow Hooker OK USA ASABE
1948 The USDA Small Watershed Program Stillwater OK USA ASABE
1935 Vegetated Waterways Stillwater OK USA ASABE
Displaying results 1 of 4 - 4

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.