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Patents for Richard J. Holmgreen
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	422,053	Feb. 25, 1890	R.J. Holmgreen	Machine for turning broom-handles
	1,502,633	Jul. 22, 1924	J.H. Holmgreen	Stop Mechanism for Bending Machines
	1,679,825	Aug. 07, 1928	R.J. Holmgreen, J.H. Holmgreen	Rotary Well Drilling Machine

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