John A. Baird

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Fairmont, WV, US

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Patents Grantslast 30 patents

Information Patent Grant
Continuous miner with improved duct system and method of increasing...
- Patent number 5,104,194
- Issue date Apr 14, 1992
- Tamrock World Corporation, N.V.
- Maurice K. LeBegue
- E21 - EARTH DRILLING MINING