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Patents for David Drummond
Patents 1 - 2 of 2
Picture	Number	Date	Patentee	Title
	98,933	Jan. 18, 1870	D. Drummond	Improvement in screw-drivers
	107,765	Sep. 27, 1870	D. Drummond, P.N. Drake	Cutter Adjuster for Splint Planes

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