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All Patents in class 175/122
Patents 1 - 2 of 2
Number	Date	Patentee	Title	Type
47,727	May 16, 1865	W.S. Hunter, S.R. Hunter	Boring Artesian Wells	well drilling machines
880,140	Feb. 25, 1908	B. Hastings	Drilling Machine	stone boring and drilling machines

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