DIFF Subgroup
B28B 21/02 by casting into moulds
Introduced: September 1968
Full Title
Methods or machines specially adapted for the production of tubular articles > by casting into moulds
IPC and CPC are identically structured here. All 4 subcodes exist in both systems.
1 shared codes have differing titles between IPC and CPC.
Child Classifications
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- B28B 21/04 by simple casting, the material being neither positively compacted nor forcibly fed IPC+CPC Available in IPC and CPC
- B28B 21/06 into moulds having sliding parts (B28B21/26 takes precedence; forms, shutterings, or falsework for making rooms as a whole, whole stories, or whole buildings in situ E04G11/02) IPC+CPC Available in IPC and CPC