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Patents for James Duckworth
Patents 1 - 2 of 2
Picture	Number	Date	Patentee	Title
	268,560	Dec. 05, 1882	E. Smith, J. Duckworth	Combination Tool
	282,966	Aug. 14, 1883	E. Smith, J. Duckworth	Combined Protractor, Square, and Bevel

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