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B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
B23G5/00—Thread-cutting tools; Die-heads
B23G5/08—Thread-cutting tools; Die-heads with means for adjustment
B23G5/14—Tapping-heads
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FR54916D1946-07-231946-07-23Taraud extensible avec bague de guidage conique mobile adaptable d'après l'alésageopposé aux lames du taraud
ExpiredFR54916E
(fr)