Patent classifications
B
PERFORMING OPERATIONS; TRANSPORTING
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B23
MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
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B23F
MAKING GEARS OR TOOTHED RACKS
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15/00
Methods or machines for making gear wheels of special kinds not covered by groups B23F7/00 - B23F13/00
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B23F15/08
Making intermeshing rotors, e.g. of pumps
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