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Patents for Frank W. Ofeldt
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	356,419	Jan. 18, 1887	F.W. Ofeldt	Gas Engine
	538,694	May 07, 1895	F.W. Ofeldt	Vapor Engine
	540,757	Jun. 11, 1895	F.W. Ofeldt	Vapor Engine

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