All Patents in class 279/19.1


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All Patents in class 279/19.1
Patents 1 - 5 of 5
Picture	Number	Date	Patentee	Title
	779,084	Jan. 03, 1905	A. Jones	Drill or tool holder
	1,253,828	Jan. 15, 1918	C.A. Hultquist	Drill Steel Retaining Device
	1,755,269	Apr. 22, 1930	G.C. Pearson	Tool Holder
	2,720,401	Oct. 11, 1955	G.H. Fuehrer	Drill steel retainer
	2,958,534	Nov. 01, 1960	G.M. Fuehrer	Working tool retainer mechanism