All Patents in class 369/257


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All Patents in class 369/257
Patents 1 - 2 of 2
Picture	Number	Date	Patentee	Title
	1,256,034	Feb. 12, 1918	H.L. Notter	Needle Sharpener
	1,256,646	Feb. 19, 1918	C.J. Barry	Grinding and Polishing Machine