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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
B23G11/00—Feeding or discharging mechanisms combined with, or arranged in, or specially adapted for use in connection with, thread-cutting machines
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FR758302D1932-10-171933-07-13Procédé et dispositif pour le vissage de manchons taraudés ou d'écrous sur des tuyaux ou objets analogues
ExpiredFR758302A
(fr)
Procédé et dispositif pour le freinage de la chute dans l'air d'aéronefs, de personnes ou objets ainsi que du déplacement d'aéronefs ou autres engins sur le sol ou sur l'eau