for digging trenches or ditches (; agricultural ploughs for working ridges A01B13/02)

Full Title

Dredgers or soil-shifting machines for special purposes > for digging trenches or ditches (; agricultural ploughs for working ridges A01B13/02)

Child Classifications

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• E02F 5/022
• E02F 5/025
• E02F 5/027
• E02F 5/04 with digging screws
• E02F 5/06 with digging elements mounted on an endless chain
• E02F 5/08 with digging wheels turning round an axis
• E02F 5/10 with arrangements for reinforcing trenches or ditches; with arrangements for making or assembling conduits or for laying conduits or cables (laying pipes per se F16L1/00, making pipes in situ F16L1/038; laying electric cables per se H02G1/06; )
• E02F 5/12 with equipment for back-filling trenches or ditches
• E02F 5/14 Component parts for trench excavators, e.g. indicating devices