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All Patents in class 294/86.31
Patents 1 - 2 of 2
Picture	Number	Date	Patentee	Title
	1,281,140	Oct. 08, 1918	W.R. Guiberson, R.A. Conkling	Drill
	2,263,910	Nov. 25, 1941	G.H. Williams	Standing Valve Puller

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