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All Patents in class 408/27
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	687,025	Nov. 19, 1901	B.E. Hervey	Boring and Drilling Machine
	1,475,153	Nov. 20, 1923	H. Athenas	Portable electric combination drill
	1,503,206	Jul. 29, 1924	A.W. Ojerholm	Combination valve grinder and drill

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