CPC Main Group
E21B 12/00 Accessories for drilling tools
3 direct subcodes
Child Classifications
Navigate with arrow keys, Enter to open
- E21B 12/02 Wear indicators
- E21B 12/04 Drill bit protectors
- E21B 12/06 Mechanical cleaning devices
E21B 12/00 3 direct subcodes
Navigate with arrow keys, Enter to open