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B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
B23D5/00—Planing or slotting machines cutting otherwise than by relative movement of the tool and workpiece in a straight line
B23D5/02—Planing or slotting machines cutting otherwise than by relative movement of the tool and workpiece in a straight line involving rotary and straight-line movements only, e.g. for cutting helical grooves
FR514505A1919-06-281920-04-26
Improvements to grooving machines
ExpiredFR514505A
(en)