Patent classifications
B
PERFORMING OPERATIONS; TRANSPORTING
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B21
MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
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B21H
MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
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8/00
Rolling metal of indefinite length in repetitive shapes specially designed for the manufacture of particular objects; , e.g. checkered sheets
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B21H8/005
Embossing sheets or rolls
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