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Patents for Herman M. Gasstrom
Patents 1 - 2 of 2
Picture	Number	Date	Patentee	Title
	1,847,757	Mar. 01, 1932	H.M. Gasstrom	Folding Rule Hinge
	1,965,230	Jul. 03, 1934	H.M. Gasstrom	Hinge Joint for Folding Rules

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