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Patents for John F. Stevenson
Patents 1 - 2 of 2
Picture	Number	Date	Patentee	Title
	152,393	Jun. 23, 1874	W.F. Brenizer, P. McBride	Improvement in sandpapering-machines
	276,323	Apr. 24, 1883	R.H. Ainsworth	Cutter-head

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