ข้อมูลสัญลักษณ์จำแนกการออกแบบผลิตภัณฑ์ระหว่างประเทศ


รหัส / code คำอธิบาย / code name Version
E21B0010640000 characterised by the whole or part thereof being insertable into or removable from the borehole without withdrawing the drilling pipe (retrievable core receivers E21B0025020000) 1
E21B0010660000 the cutting element being movable through the drilling pipe and laterally shiftable 1
E21B0011000000 Other drilling tools 1
E21B0011020000 Boring rams (percussion drives used in the borehole E21B0004060000; percussion drill bits E21B0010360000) 1
E21B0011040000 Boring grabs 1
E21B0011060000 with driven cutting chains or similarly-driven tools 1
E21B0012000000 Accessories for drilling tools 1
E21B0012020000 Wear indicators 1
E21B0012040000 Drill bit protectors 1
E21B0012060000 Mechanical cleaning devices 1
E21B0015000000 Other equipment or details for drilling; Well equipment or well maintenance 1
E21B0015000000 Supports for the drilling machine, e.g. derricks or masts 1
E21B0015020000 specially adapted for underwater drilling (E21B0015040000 takes precedence;floating drilling platforms B63B0035440000; drilling platforms on legs E02B0017000000) 1
E21B0015040000 specially adapted for directional drilling, e.g. slant hole rigs 1
E21B0017000000 Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings (rod couplings in general F16D; tubes or tube couplings in general F16L) 1