DIFF Subgroup
B21K 1/38 rims; tyres
Introduced: September 1968
Full Title
Making machine elements > wheels; discs > rims; tyres
No child classifications to compare. This is a leaf node in both IPC and CPC.
B21K 1/38 Introduced: September 1968
Making machine elements > wheels; discs > rims; tyres
No child classifications to compare. This is a leaf node in both IPC and CPC.