All Patents in class 451/289


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All Patents in class 451/289
Patents 1 - 2 of 2
Number	Date	Patentee	Title	Type
2,352,146	Jun. 20, 1944	J. Desenberg	Grinding and Polishing Machine	polishing and buffing machinery
2,883,803	Apr. 28, 1959	C. Stead	Lapping Surface Conditioning Means	lapping machines