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Patents for Plumb, Burdict and Barnard
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	211,826	Jan. 28, 1879	S.L. Worsley	Machine for Nutting Bolts
	232,869	Oct. 05, 1880	S.L. Worsley	Machine for Threading Screws
	246,933	Sep. 13, 1881	S.L. Worsley	Machine for Feeding Screw Blanks

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