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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
B24B3/00—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools
B24B3/24—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of drills
B24B3/245—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of drills for simultaneously sharpening several drills; Supports therefor
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FR813501A1958-12-241959-12-18
Device for sharpening the blades of twist drills with cylindrical shank
ExpiredFR1243633A
(en)