CPC Subgroup
E21C 47/02 for coal, brown coal, or the like (dredgers or soil-shifting machines in general E02F)
Full Title
Machines for obtaining or the removal of materials in open-pit mines (obtaining peat E21C49/00) > for coal, brown coal, or the like (dredgers or soil-shifting machines in general E02F)
3 direct subcodes
Child Classifications
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- E21C 47/04 Conveyor bridges used in co-operation with the winning apparatus
- E21C 47/06 Cableway conveyors used in co-operation with the winning apparatus (underground hauling E21F13/00)
- E21C 47/08 Devices for cutting-out partings, e.g. layers of sand between seams of coal