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Patents for Frank J. Bohn
Patents 1 - 2 of 2
Picture	Number	Date	Patentee	Title
	1,797,121	Mar. 17, 1931	F.J. Bohn	Micrometer Gage for Internal Threads
	1,797,122	Mar. 17, 1931	F.J. Bohn	Micrometer Gauge for Internal Threads

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