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B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
B23B—TURNING; BORING
B23B9/00—Automatic or semi-automatic turning-machines with a plurality of working-spindles, e.g. automatic multiple-spindle machines with spindles arranged in a drum carrier able to be moved into predetermined positions; Equipment therefor
B23B9/02—Automatic or semi-automatic machines for turning of stock
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FR401773D1909-03-221909-03-22Perfectionnements apportés aux machines automatiques à broches multiples pour tailler les vis
ExpiredFR401773A
(fr)