Patent classifications
B
PERFORMING OPERATIONS; TRANSPORTING
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B21
MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
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B21F
WORKING OR PROCESSING OF METAL WIRE
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15/00
Connecting wire to wire or other metallic material or objects; Connecting parts by means of wire
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B21F15/04
without additional connecting elements or material, e.g. by twisting
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