CPC Main Group
B24B 15/00 Machines or devices designed for grinding seat surfaces; Accessories therefor (for spherical surfaces in general B24B11/00)
4 direct subcodes
Child Classifications
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- B24B 15/02 in valve housings
- B24B 15/04 on valve members
- B24B 15/06 on openings of bottles; on bottle stoppers or the like
- B24B 15/08 for grinding co-operating seat surfaces by moving one over the other