Chris D. Kitchen

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Springville, UT, US

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Patents Grantslast 30 patents

Information Patent Grant
Variable yielding mining crib support column
- Patent number 5,439,325
- Issue date Aug 8, 1995
- Mountainland Support, Inc.
- Chris D. Kitchen
- E21 - EARTH DRILLING MINING
Information Patent Grant
Collapsible crib mining support column
- Patent number 5,342,150
- Issue date Aug 30, 1994
- Mountainland Support, Inc.
- Chris D. Kitchen
- E21 - EARTH DRILLING MINING