Patents for Irving J. Knudson


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Patents for Irving J. Knudson
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	2,110,367	Mar. 08, 1938	I.J. Knudson	Air Conditioning System
	2,187,038	Jan. 16, 1940	I.J. Knudson	Method of and Apparatus for Cold Control
	2,251,831	Aug. 05, 1941	I.J. Knudson	Refrigerating Apparatus