All Patents in class 396/439


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All Patents in class 396/439
Patents 1 - 2 of 2
Picture	Number	Date	Patentee	Title
	1,236,419	Aug. 14, 1917	W.F. Folmer	Aviator's Camera
	2,345,365	Mar. 28, 1944	O. Steiner	Photographic Shutter Particularly Adapted for Aerial Photography