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All Patents in class 172/297
Patents 1 - 2 of 2
Number	Title	Classification(s)
101,395	American Steam Plow	172/271, 172/292, 172/297, 172/484, 180/36, 74/390
160,760	Steam Plow	172/111, 172/114, 172/297, 172/481, 172/483, 172/491, 180/36, 280/93.505

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