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Publication of FR850569ApublicationCriticalpatent/FR850569A/fr
B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
B23B—TURNING; BORING
B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
B23B31/02—Chucks
B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
B23B31/117—Retention by friction only, e.g. using springs, resilient sleeves, tapers
B23B31/1173—Retention by friction only, e.g. using springs, resilient sleeves, tapers using springs
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FR850569D1938-08-311938-08-31Mandrin pour tour ou autres machines, assurant l'entraînement intérieur automatique des pièces à usiner extérieurement
ExpiredFR850569A
(fr)