Patents for Bertram B. Quillen


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Patents for Bertram B. Quillen
Patents 1 - 2 of 2
Picture	Number	Date	Patentee	Title
	775,372	Nov. 22, 1904	G. Langen	Counter-shaft with changeable speed
	1,986,006	Jan. 01, 1935	B.B. Quillen, G. Langen, R.H. McClellan	Machine Tool Construction