All Patents in class 173/197


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All Patents in class 173/197
Patents 1 - 2 of 2
Picture	Number	Date	Patentee	Title
	6,399	Apr. 24, 1849	C. Foss	Machine for making grindstones
	643,083	Feb. 06, 1900	M.C. Bullock, deceased (Estate of), M.A. Bullock, Executrix	Thrust Register for Drilling Machines