[December 18, 1923] farmer James Cummings and draftsman J. Earl McLeod filed U.S. patent #1,522,378 for an "Attachment for Tractors". This machine/attachment combo would later be called a "bulldozer" | Spyke

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[December 18, 1923] farmer James Cummings and draftsman J. Earl McLeod filed U.S. patent #1,522,378 for an "Attachment for Tractors". This machine/attachment combo would later be called a "bulldozer"

https://patents.google.com/patent/US1522378?oq=1522378Open link View original on leminal.space

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[December 18, 1923] farmer James Cummings and draftsman J. Earl McLeod filed U.S. patent #1,522,378 for an "Attachment for Tractors". This machine/attachment combo would later be called a "bulldozer" | Spyke