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Patents for Samuel Lewis Penfield
Patents 1 - 2 of 2
Number	Date	Patentee	Title	Type
655,004	Jul. 31, 1900	S.L. Penfield	Contact Goniometer	goniometers
655,005	Jul. 31, 1900	S.L. Penfield	Contact Goniometer	goniometers

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