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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
B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
B24B19/007—Single-purpose machines or devices for particular grinding operations not covered by any other main group for grinding buttons, nail heads, screw heads, bottle capsules or the like
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FR1085478D1952-08-291953-07-01Perfectionnements apportés aux machines pour polir des fermetures coulissantes
ExpiredFR1085478A
(fr)