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All Patents in class 175/202
Patents 1 - 5 of 5
Picture	Number	Date	Patentee	Title
	9,555X	Mar. 30, 1836	A. Turney	Boring stones
	4,194	Sep. 17, 1845	R.A. Stratton, T.S. Speakman	Apparatus for Boring Rocks or Earth
	8,882	Apr. 20, 1852	N. Blake	Submarine Auger
	63,842	Apr. 16, 1867	C. Boernicke	Improvement in Wood-Boring Bits
	998,534	Jul. 18, 1911	J.C. Knuckles	Combined auger and reamer

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