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Patents for R. Burkhardt
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	1,178,007	Apr. 04, 1916	A. Gloor	Wrench
	1,249,300	Dec. 11, 1917	W.A. Barker	Chuck
	1,391,039	Sep. 20, 1921	C.H. Beach	Electric Grinder

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