Song Guo

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Morgantown, WV, US

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Patents Grantslast 30 patents

Information Patent Grant
Method of roof control in an underground mine
- Patent number 5,824,912
- Issue date Oct 20, 1998
- Jennmar Corporation
- John C. Stankus
- E21 - EARTH DRILLING MINING
Information Patent Grant
Multi-piece, split bail expansion anchor
- Patent number 5,762,451
- Issue date Jun 9, 1998
- Jennmar Corporation
- John C. Stankus
- E21 - EARTH DRILLING MINING
Information Patent Grant
Method and apparatus for monitoring mine roof support systems
- Patent number 5,542,788
- Issue date Aug 6, 1996
- Jennmar Corporation
- John C. Stankus
- E21 - EARTH DRILLING MINING