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All Patents in class 470/178
Patents 1 - 5 of 5
Picture	Number	Date	Patentee	Title
	1,111,833	Sep. 29, 1914	F.C. Hoffman	Nut-tapping machine
	1,254,176	Jan. 22, 1918	L.W. Thorsell	Automatic Thread Rolling Machine
	1,607,614	Nov. 23, 1926	J.H. Graham	Tapping machine
	1,687,134	Oct. 09, 1928	W.S. Gilmour, J.M. Lynch	Machine for feeding headed blanks
	1,955,775	Apr. 24, 1934	B.P. Schiltz	Apparatus for handling work pieces

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