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Application filed by Retor FrancoisfiledCriticalRetor Francois
Publication of CH147521ApublicationCriticalpatent/CH147521A/fr
B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
B23G3/00—Arrangements or accessories for enabling machine tools not specially designed only for thread cutting to be used for this purpose, e.g. arrangements for reversing the working spindle
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Engineering & Computer Science
(AREA)
Mechanical Engineering
(AREA)
CH147521D1930-05-201930-05-20Dispositif de filetage.
CH147521A
(fr)