IPC 2013 : E03B 5/04 : arranged in wells.

IPC2013 > E > E03 > E03B > E03B 5/00 > E03B 5/04[1] > arranged in wells.
Notes[t] E01 - E06: BUILDING
E SECTION E — FIXED CONSTRUCTIONS.
E03 WATER SUPPLY; SEWERAGE.
E03B INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER (drilling wells, obtaining fluids in general from wells E21B; pipe-line systems in general F17D).
E03B 5/00 Use of pumping plants or installations; Layouts thereof (pumps, pumping plants or installations per se , F04).
E03B 5/04 · arranged in wells.