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Application filed by Boehringer Gmbh GebfiledCriticalBoehringer Gmbh Geb
Publication of CH157720ApublicationCriticalpatent/CH157720A/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
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Mechanical Engineering
(AREA)
CH157720D1931-04-271931-04-27Boîte de vitesses pour tour à fileter.
CH157720A
(fr)