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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B21J15/04
Riveting hollow rivets mechanically
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B21J15/045
and swaging locking means, i.e. locking the broken off mandrel head to the hollow rivet
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