Patent classifications
B
PERFORMING OPERATIONS; TRANSPORTING
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B23
MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
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B23G
THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
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1/00
Thread cutting; Automatic machines specially designed therefor
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B23G1/34
with a cutting bit moving in a closed path arranged eccentrically with respect to the axis of the rotating workpieces
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