CPC Main Group
B32B 11/00 Layered products comprising bituminous or tarry substances
4 direct subcodes
Child Classifications
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- B32B 11/02 with fibres or particles
- B32B 11/04 comprising such substance as the main or only constituent of a layer, next to another layer of a
- B32B 11/10 next to a fibrous or filamentary layer
- B32B 11/12 next to a particulate layer