Ronald W. Keen

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Blacksburg, VA, US

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Patents Grantslast 30 patents

Information Patent Grant
Conveyor lift and service shoe assembly and method of moving
- Patent number 6,036,276
- Issue date Mar 14, 2000
- Eimco LLC
- Jonathan G. Faw
- E21 - EARTH DRILLING MINING
Information Patent Grant
Method and apparatus for suppressing dust and frictional ignition o...
- Patent number 5,507,565
- Issue date Apr 16, 1996
- Eimco Coal Machinery, Inc.
- Maurice K. LeBegue
- E21 - EARTH DRILLING MINING
Information Patent Grant
Stabilizing assembly for a mining machine
- Patent number 4,281,879
- Issue date Aug 4, 1981
- National Mine Service Company
- Maurice K. LeBegue
- E21 - EARTH DRILLING MINING
Information Patent Grant
Material gathering device
- Patent number 4,165,803
- Issue date Aug 28, 1979
- National Mine Service Company
- Ronald W. Keen
- E21 - EARTH DRILLING MINING