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PCE
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DIFF Subgroup
B21D 1/08

of hollow bodies made from sheet metal (of substantially open bodies B21D1/10 )

Introduced: September 1968

Title

Titles differ between systems:

IPC: of hollow bodies made from sheet metal

CPC: of hollow bodies made from sheet metal (of substantially open bodies B21D1/10 )

Full Title

Full titles differ between systems:

IPC:

Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling > Removing local distortions > of hollow bodies made from sheet metal

CPC:

Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom (B21D3/00 takes precedence); Stretching sheet metal combined with rolling (working sheet metal of limited length by stretching B21D25/00; by localised hammering B21D31/06) > Removing local distortions > of hollow bodies made from sheet metal (of substantially open bodies B21D1/10 )

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