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All Patents in class 451/286
Patents 1 - 5 of 5
Picture	Number	Date	Patentee	Title
	2,391,388	Dec. 25, 1945	E.J. Bullard	Grinding and Lapping Machine
	2,565,590	Aug. 28, 1951	E.J. Bullard	Lapping Machine
	RE23,937	Feb. 08, 1955	B.B. Green, executrix, E.J. Bullard, deceased (estate of)	Lapping Machine
	2,842,906	Jul. 15, 1958	R.D. Ryan, L.E. Carter	Work Holder for Lapping Machine
	2,883,803	Apr. 28, 1959	C. Stead	Lapping Surface Conditioning Means

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