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ALWAG TUNNELAUSBAU GESELLSCHAFT M.B.H.
| ALWAG TUNNELAUSBAU GESELLSCHAFT M.B.H. Patent applications | ||
| Patent application number | Title | Published |
|---|---|---|
| 20090114402 | Method and Device for Drilling, Particularly Percussion or Rotary Percussion Drilling ,a Hole in Soil or Rock Material - The invention relates to a method and device for drilling, particularly percussion drilling or rotary percussion drilling a hole in soil or rock material and fixing an anchoring in the hole. To this end, a drilled hole is made by a drill bit ( | 05-07-2009 |