CPC Main Group
C23C 28/00 Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
4 direct subcodes
Child Classifications
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- C23C 28/02 only coatings of metallic material
- C23C 28/04 only coatings of inorganic non-metallic material