IPC 2013 : E02F 3/633 : Drives therefor.

IPC2013 > E > E02 > E02F > E02F 3/00 > E02F 3/633[3] > Drives therefor.
Notes[t] E01 - E06: BUILDING
E SECTION E — FIXED CONSTRUCTIONS.
E02 HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL-SHIFTING.
E02F DREDGING; SOIL-SHIFTING (winning peat E21C 49/00).
E02F 3/00 Dredgers; Soil-shifting machines (for special purposes E02F 5/00; other machines or apparatus for mining E21C; tunnelling E21D).
E02F 3/633 · · · Drives therefor.