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Patents for Francis M. Springer
Patents 1 - 2 of 2
Number	Date	Patentee	Title	Type
964,313	Jul. 12, 1910	J.G. Portteus	Wrench	self-adjust wrenches
970,228	Sep. 13, 1910	A.S. Horlacher, H.C. Baase	Carpet-cleaning machine

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