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B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
B23G1/00—Thread cutting; Automatic machines specially designed therefor
B23G1/02—Thread cutting; Automatic machines specially designed therefor on an external or internal cylindrical or conical surface, e.g. on recesses
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FR1021616D1950-07-071950-07-07Appareil semi-automatique amovible permettant d'exécuter ? un tour ordinaire des opérations telles que le filetage
ExpiredFR1021616A
(fr)