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Patent classifications
B
PERFORMING OPERATIONS; TRANSPORTING
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B21
MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
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B21K
MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
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25/00
Uniting components to form integral members, e.g. turbine wheels and shafts, caulks with inserts, with or without shaping of the components
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B21K25/005
by friction heat forging
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