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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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FR942689D1946-01-071947-03-05Perfectionnements aux dispositifs d'entraînement de pièces à usiner dans les machines à meuler, tours ou autres
ExpiredFR942689A
(fr)