All Patents in class 136/222


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All Patents in class 136/222
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	1,103,640	Jul. 14, 1914	C.H. Wilson	Thermo-electric pyrometer
	1,169,617	Jan. 25, 1916	E.W. Comfort	Thermo-electric humidity instrument
	1,996,943	Apr. 09, 1935	D.D. Wile	Fluid Measuring Device