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All Patents in class 180/210
Patents 1 - 5 of 5
First set of recordsLast set of records
16,937Mar. 31, 1857D.B. SpencerSteam Plowsteam plows
263,279Aug. 22, 1882T.T. WoodruffSteam Plowsteam plows
325,768Sep. 08, 1885H. RendlemanTraction Enginesteam traction engines
1,061,453May 13, 1913O.M. CoxTraction Enginesteam traction engines
1,215,372Feb. 13, 1917A.P. HawnTractorinternal combustion traction engines
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