All Patents in class 356/618


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All Patents in class 356/618
Patents 1 - 2 of 2
Picture	Number	Date	Patentee	Title
	1,415,627	May 09, 1922	G.E. Giambiasi	Optical Scale for Vernier Measurements
	2,720,810	Oct. 18, 1955	J.A. Senn	Measuring Instrument