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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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FR911390D1945-06-121945-06-12Taraud extensible avec bague de guidage conique mobile, adaptable d'après l'alésage opposé aux lames du taraud
ExpiredFR911390A
(fr)