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B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
B24D7/02—Wheels in one piece
FR973689D1941-11-131941-11-13
Improvements to lapping tools
ExpiredFR973689A
(en)