Auto Patrol and Airplanes | c. 1931
2,196 views · Published 26 April 2016 · 0:49 · Indexed 25 September 2026
Channel: Caterpillar Inc. · 2016 · Science & Technology
Caterpillar Auto Patrols (our first motor graders) and Caterpillar track-type tractors at work in 1931. See more videos from our vault at caterpillar.com/history.
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