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All Patents in class 172/627
Patents 1 - 4 of 4
Number	Date	Patentee	Title	Type
16,933	Mar. 31, 1857	J.E. Morgan	Improvement in Harrows	harrows
120,195	Oct. 24, 1871	E.W. Herendeen	Improvement in harrows	harrows
540,618	Jun. 04, 1895	W.A. Dromgold, S.N. Hench	Harrow	harrows
555,699	Mar. 03, 1896	W.A. Dromgold, S.N. Hench	Harrow	harrows

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