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Patents for John H. Frey
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	510,375	Dec. 05, 1893	J. Ayuso	Winding Key For Guitars
	1,256,462	Feb. 12, 1918	M. Mayer, J.H. Frey	Boring Tool Holder
	1,463,686	Jul. 31, 1923	J.N. Kaiser, J.H. Frey	Boring Head

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