ข้อมูลสัญลักษณ์จำแนกการออกแบบผลิตภัณฑ์ระหว่างประเทศ


รหัส / code คำอธิบาย / code name Version
E21F0013000000 Transport specially adapted to underground conditions (mine cars B61D; transport in general, loading B65G) 1
E21F0013020000 in galleries 1
E21F0013040000 in gravity inclines; in staple or inclined shafts 1
E21F0013060000 at or adjacent to the working face 1
E21F0013080000 Shifting conveyors or other transport devices from one location at the working face to another (guiding mining machines along conveyors for the cut mineral E21C0035120000; in combination with mine roof supports for step-by-step movement E21D0023000000) 1
E21F0013100000 Anchorings for conveyors 1
E21F0015000000 Methods or devices for placing filling-up materials in underground workings (dams E21F0017103000) 1
E21F0015020000 Supporting means, e.g. shuttering, for filling-up materials 1
E21F0015040000 Stowing mats; Goaf wire netting; Partition walls 1
E21F0015060000 Filling-up mechanically 1
E21F0015080000 Filling-up hydraulically or pneumatically (hydraulic or pneumatic transport devices B65G; pipes, pipe couplings F16L) 1
E21F0015100000 Hydraulic or pneumatic filling-up machines 1
E21F0016000000 Drainage (keeping dry foundation sites or other areas in the ground E02D0019000000) 1
E21F0016020000 of tunnels 1
E21F0017000000 Methods or devices for use in mines or tunnels, not covered elsewhere (mine lighting F21, H05B) 1