David L. Conley

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Huntington, WV, US

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus and method for continuous mining
- Patent number 5,364,171
- Issue date Nov 15, 1994
- Mining Technologies, Inc.
- Larry C. Addington
- E21 - EARTH DRILLING MINING
Information Patent Grant
Apparatus for continuous mining
- Patent number 5,261,729
- Issue date Nov 16, 1993
- Mining Technologies, Inc.
- Larry C. Addington
- E21 - EARTH DRILLING MINING
Information Patent Grant
Launch vehicle for continuous mining apparatus
- Patent number 5,232,269
- Issue date Aug 3, 1993
- Mining Technologies, Inc.
- Larry C. Addington
- E21 - EARTH DRILLING MINING
Information Patent Grant
Apparatus and method for continuous mining
- Patent number 5,112,111
- Issue date May 12, 1992
- Addington Resources, Inc.
- Larry C. Addington
- E21 - EARTH DRILLING MINING