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PCE
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DIFF Subgroup
B21K 3/04

blades, e.g. for turbines; Upsetting of blade roots

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Making engine or like machine parts not covered by; Making propellers or the like > blades, e.g. for turbines; Upsetting of blade roots

CPC:

Making engine or like machine parts not covered by sub-groups of B21K1/00; Making propellers or the like > blades, e.g. for turbines; Upsetting of blade roots

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