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Potter & Johnston Machine Comp
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Potter & Johnston Machine Comp
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Application filed by Potter & Johnston Machine CompfiledCriticalPotter & Johnston Machine Comp
Application grantedgrantedCritical
Publication of FR431938ApublicationCriticalpatent/FR431938A/fr
B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
B23B—TURNING; BORING
B23B7/00—Automatic or semi-automatic turning-machines with a single working-spindle, e.g. controlled by cams; Equipment therefor; Features common to automatic and semi-automatic turning-machines with one or more working-spindles
B23B7/12—Automatic or semi-automatic machines for turning of workpieces
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Engineering & Computer Science
(AREA)
Mechanical Engineering
(AREA)
FR431938D1911-07-041911-07-04Perfectionnements apportés aux tours automatiques à tourelle
ExpiredFR431938A
(fr)