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All Patents in class 74/41
Patents 1 - 5 of 5
Picture	Number	Date	Patentee	Title
	495,689	Apr. 18, 1893	J. Barrett	Oil-well-drilling apparatus
	657,977	Sep. 18, 1900	O.J. Ziegler	Windmill
	1,821,216	Sep. 01, 1931	F.G. Hobart, W.C. Heath	Pump
	1,864,466	Jun. 21, 1932	J.M. Peterson	Tool Holder
	2,774,430	Dec. 18, 1956	W.J. Blazek	Latching means for die set retainers

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