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

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