All Patents in class 250/230


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All Patents in class 250/230
Patents 1 - 2 of 2
Picture	Number	Date	Patentee	Title
	2,720,810	Oct. 18, 1955	J.A. Senn	Measuring Instrument
	2,832,894	Apr. 29, 1958	R.H. Eisengrein, R.J. W, D.A. Straznickas	Automatic machine