Patents for John Humphreys


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Patents for John Humphreys
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	41,704	Feb. 23, 1864	J. Humphreys	Improvement in Turning Bayonet-Sockets
	83,774	Nov. 03, 1868	J. Humphreys	Improved Adjustable Gearing for Lathes
	89,483	Apr. 27, 1869	J. Humphreys	Improvement in bench-hooks