Patent classifications
B
PERFORMING OPERATIONS; TRANSPORTING
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B21
MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
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B21J
FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
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13/00
Details of machines for forging, pressing, or hammering
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B21J13/02
Dies or mountings therefor
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