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B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
B24B15/00—Machines or devices designed for grinding seat surfaces; Accessories therefor
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FR754906D1933-04-191933-04-19Nouveau procédé pour le rôdage des sièges de soupapes des moteurs
ExpiredFR754906A
(fr)