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PCE
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DIFF Subgroup
B21D 15/03

by applying fluid pressure

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Corrugating tubes > longitudinally > by applying fluid pressure

CPC:

Corrugating tubes (wrinkle-bending using mandrels or the like B21D9/14) > longitudinally > by applying fluid pressure

No child classifications to compare. This is a leaf node in both IPC and CPC.