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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
B24B21/00—Machines or devices using grinding or polishing belts; Accessories therefor
B24B21/008—Machines comprising two or more tools or having several working posts
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FR901507D1944-01-251944-01-25Perfectionnements aux machines à polir
ExpiredFR901507A
(fr)