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Patents for R. M. Hartley
Patents 1 - 2 of 2
Picture	Number	Date	Patentee	Title
	59,950	Nov. 27, 1866	J. Borthwick	Improved Machine for Sharpening Saws
	D16,803	Jul. 20, 1886	M. Bacon	Design for a frame for telegraph-instruments

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