IPC 2013 : E02D 17/16 : Loosening of soil or rock, under water (for correcting streams E02B 3/02; by dredgers or excavators E02F).

IPC2013 > E > E02 > E02D > E02D 17/00 > E02D 17/16[1] > Loosening of soil or rock, under water (for correcting streams E02B 3/02; by dredgers or excavators E02F).
Notes[t] E01 - E06: BUILDING
E SECTION E — FIXED CONSTRUCTIONS.
E02 HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL-SHIFTING.
E02D FOUNDATIONS; EXCAVATIONS; EMBANKMENTS (specially adapted for hydraulic engineering E02B ); UNDERGROUND OR UNDERWATER STRUCTURES.
E02D 17/00 Excavations; Bordering of excavations; Making embankments (soil shifting apparatus E02F; earth drilling E21).
E02D 17/16 · Loosening of soil or rock, under water (for correcting streams E02B 3/02; by dredgers or excavators E02F).