All Patents in class 279/143


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All Patents in class 279/143
Patents 1 - 4 of 4
Picture	Number	Date	Patentee	Title
	529,401	Nov. 20, 1894	H. Pratt, W.H. McCoy	Spiral screw driver and drill
	935,977	Oct. 05, 1909	H.W. Haskell	Tool Holder
	2,709,600	May 31, 1955	J.W. Lehde	Lock and Ejector Collets
	4,238,167	Dec. 09, 1980	J.J. Hughes, D.M. Brugger	Toolholder Adapter