IPC 2013 : E02D 3/032 : Trench rollers.

IPC2013 > E > E02 > E02D > E02D 3/00 > E02D 3/032[3] > Trench rollers.
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 3/00 Improving or preserving soil or rock, e.g. preserving permafrost soil (securing of slopes or inclines E02D 17/20; damming or interrupting passage of underground water E02D 19/12; improving soil for agricultural purposes A01; soil stabilisation for road building or like purposes E01C 21/00, E01C 23/10; setting rock anchoring bolts E21D).
E02D 3/032 · · · Trench rollers.