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B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
B23B—TURNING; BORING
B23B33/00—Drivers; Driving centres, Nose clutches, e.g. lathe dogs
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FR615669D1926-05-051926-05-05Perfectionnements aux dispositifs d'entraînement des pièces à travailler, sur les tours ou machines-outils similaires
ExpiredFR615669A
(fr)