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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
B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
B24B7/10—Single-purpose machines or devices
B24B7/18—Single-purpose machines or devices for grinding floorings, walls, ceilings or the like
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FR480493D1914-04-301915-12-20Machine à polir ou égaliser les planchers en terrazzo, marbre, etc.
ExpiredFR480493A
(fr)