All Patents in class 242/433.2


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All Patents in class 242/433.2
Patents 1 - 2 of 2
Picture	Number	Date	Patentee	Title
	1,396,728	Nov. 15, 1921	P.E. Chapman	Unreeling and tension device
	1,523,630	Jan. 20, 1925	P.E. Chapman	Armature-winding machine