CPC Main Group
E21C 47/00 Machines for obtaining or the removal of materials in open-pit mines (obtaining peat E21C49/00)
2 direct subcodes
Child Classifications
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- E21C 47/02 for coal, brown coal, or the like (dredgers or soil-shifting machines in general E02F)
- E21C 47/10 for quarrying stone, sand, gravel, or clay