Volker Kruger

Person

Celle, DE

People

Patents Grantslast 30 patents

Information Patent Grant
Apparatus and method for drilling boreholes
- Patent number 5,679,894
- Issue date Oct 21, 1997
- Baker Hughes Incorporated
- Volker Kruger
- E21 - EARTH DRILLING MINING
Information Patent Grant
Apparatus for optional straight or directional drilling underground...
- Patent number 5,343,967
- Issue date Sep 6, 1994
- Baker Hughes Incorporated
- Volker Kruger
- E21 - EARTH DRILLING MINING
Information Patent Grant
Apparatus for optional straight or directional drilling underground...
- Patent number 5,065,826
- Issue date Nov 19, 1991
- Baker Hughes Incorporated
- Volker Kruger
- E21 - EARTH DRILLING MINING
Information Patent Grant
Friction bearing for deep well drilling tools
- Patent number 4,892,420
- Issue date Jan 9, 1990
- Volker Kruger
- E21 - EARTH DRILLING MINING
Information Patent Grant
Drill bit direct drive for deep well drilling tools
- Patent number 4,889,195
- Issue date Dec 26, 1989
- Volker Kruger
- E21 - EARTH DRILLING MINING
Information Patent Grant
Drill bit direct drive for deep well drilling tools
- Patent number 4,854,401
- Issue date Aug 8, 1989
- Eastman Christensen Company
- Volker Kruger
- E21 - EARTH DRILLING MINING
Information Patent Grant
Apparatus for optional straight or directional drilling underground...
- Patent number 4,739,842
- Issue date Apr 26, 1988
- Eastman Christensen Company
- Volker Kruger
- E21 - EARTH DRILLING MINING
Information Patent Grant
Device for remote transmission of information
- Patent number 4,698,794
- Issue date Oct 6, 1987
- Eastman Christensen
- Volker Kruger
- E21 - EARTH DRILLING MINING
Information Patent Grant
Drive device for a drill bit
- Patent number 4,629,013
- Issue date Dec 16, 1986
- Norton Christensen, Inc.
- Volker Kruger
- E21 - EARTH DRILLING MINING
Information Patent Grant
Method and apparatus for selectively straight or directional drilli...
- Patent number 4,610,307
- Issue date Sep 9, 1986
- Norton Company
- Rainer Jurgens
- E21 - EARTH DRILLING MINING

Volker Kruger

Person

Patents Grantslast 30 patents

Apparatus and method for drilling boreholes

Apparatus for optional straight or directional drilling underground...

Apparatus for optional straight or directional drilling underground...

Friction bearing for deep well drilling tools

Drill bit direct drive for deep well drilling tools

Drill bit direct drive for deep well drilling tools

Apparatus for optional straight or directional drilling underground...

Device for remote transmission of information

Drive device for a drill bit

Method and apparatus for selectively straight or directional drilli...