Patents for Geneva Optical Co.


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Patents for Geneva Optical Co.
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	703,725	Jul. 01, 1902	F. Hardinge	Diopter gage
	900,531	Oct. 06, 1908	F. Hardinge	Lens measuring instrument
	1,151,635	Aug. 31, 1915	A.T. Webb	Diopter gage