Patents in subclass Excavating/Axis Longitudinal With Respect To Suction Pipe
Parent class: Excavating
| Number | Patent title | Issue Date |
|---|---|---|
| 6053663 | Device for creating a local water flow A device for creating a localized water jet within a body of water allows for the displacement of material from the floor of the body of water. The device includes two powered screws within a jet pipe. The screws are arranged coaxially... |
04/25/2000 |
| 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 |