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B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
B23B—TURNING; BORING
B23B5/00—Turning-machines or devices specially adapted for particular work; Accessories specially adapted therefor
B23B5/16—Turning-machines or devices specially adapted for particular work; Accessories specially adapted therefor for bevelling, chamfering, or deburring the ends of bars or tubes
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FR516654A1920-06-081920-06-08Dispositif pour préparer l'usinage des déchets de fer ou d'acier
ExpiredFR516654A
(fr)
Procédé de préparation de solutions colloidales à base de résines ou de combinaisons de résines et l'utilisation de ces solutions pour la concentration des minerais par le procédé dit de "flotation"