Patents in subclass Excavating/Axis Vertical With Respect To Surface Of Body Of Water
Parent class: Excavating
| Number | Patent title | Issue Date |
|---|---|---|
| 5887667 | Method and means for drilling an earthen hole An earthen hole drilling device has an elongated tube having first and second ends. A source of vacuum pressure is connected to the first end of the tube. A rotary fluid nozzle is attached to the second end of the tube and is adapted to... |
03/30/1999 |