Device for conducting cementing operations and inflow...

Device for conducting forces into movable objects

Device for connecting two elements having a substantially...

Device for controlling the feeding force at rock-drilling

Device for controlling the flow of liquid from wells

Device for controlling the orientation of bore holes

Device for controlling the weight on an earth drill bit

Device for cutting undercuts

Device for damping the recoil of a tool connected to a...

Device for deflecting drill holes in diamond drilling

Device for delivering corrosion or deposition inhibiting...

Device for delivering flowable material

Device for drilling holes in the ground

Device for drilling or draining holes in soil or rock

Device for driving holes in the ground

Device for driving rods used primarily for soil mechanics...

Device for expanding pipes

Device for extending or shortening tubings

Device for extracting at least one gas contained in a...

Device for extracting at least one type of gas contained in...