Melvin P. Kejr

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Brookville, KS, US

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Patents Grantslast 30 patents

Information Patent Grant
Ground water sampling device
- Patent number 5,635,653
- Issue date Jun 3, 1997
- Kejr Engineering, Inc.
- Volker Wittig
- E21 - EARTH DRILLING MINING
Information Patent Grant
Ground water sampling device
- Patent number 5,612,498
- Issue date Mar 18, 1997
- Kejr Engineering, Inc.
- Volker Wittig
- E21 - EARTH DRILLING MINING
Information Patent Grant
Soil sample probe with retaining ring for holding core-catching str...
- Patent number 5,606,139
- Issue date Feb 25, 1997
- Kejr Engineering, Inc.
- Volker Wittig
- E21 - EARTH DRILLING MINING
Information Patent Grant
Connector for coupling a pair of rods
- Patent number 5,588,771
- Issue date Dec 31, 1996
- Kejr Engineering, Inc.
- Gregory H. Scott
- E21 - EARTH DRILLING MINING
Information Patent Grant
Pull cap for attachment to a probe rod
- Patent number 5,553,979
- Issue date Sep 10, 1996
- Kejr Engineering, Inc.
- Volker Wittig
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Ground water sampling device
- Patent number 5,503,031
- Issue date Apr 2, 1996
- Kejr Engineering, Inc.
- Gregory H. Scott
- E21 - EARTH DRILLING MINING
Information Patent Grant
Soil sample probe
- Patent number 5,186,263
- Issue date Feb 16, 1993
- Kejr Engineering, Inc.
- Melvin P. Kejr
- E21 - EARTH DRILLING MINING