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Quick search:	Patent number:	Patent Date:

All Patents in class 60/721
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	6,546X	May 07, 1831	W.E. Arnold	Applying Horse Power to Mechanical Purposes
	6,610X	Jun. 13, 1831	I. VanDoren	Thrashing Machine
	2,137,462	Nov. 22, 1938	M. Romaine	Index Head

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