Patents for Charles W. Sponsel


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Patents for Charles W. Sponsel
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	446,898	Feb. 24, 1891	C.W. Sponsel	Rifling Machine
	870,203	Nov. 05, 1907	C.W. Sponsel	Speed-Indicator
	1,902,117	Mar. 21, 1933	R.S. Crosby, C.W. Sponsel	Screw making machine