Patent classifications
B
PERFORMING OPERATIONS; TRANSPORTING
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B23
MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
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B23P
METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
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17/00
Metal-working operations, not covered by a single other subclass or another group in this subclass
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B23P17/04
characterised by the nature of the material involved or the kind of product independently of its shape
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B23P17/06
Making steel wool or the like
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