Frederick Carr

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Tuscaloosa, AL, US

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Patents Grantslast 30 patents

Information Patent Grant
Combination expansion shell and resin secured mine roof anchor asse...
- Patent number 4,534,679
- Issue date Aug 13, 1985
- Birmingham Bolt Company
- Claude C. White
- E21 - EARTH DRILLING MINING
Information Patent Grant
Combination expansion shell and resin secured mine roof anchor asse...
- Patent number 4,534,680
- Issue date Aug 13, 1985
- Birmingham Bolt Company
- Claude C. White
- E21 - EARTH DRILLING MINING
Information Patent Grant
Combination expansion shell and resin secured mine roof anchor asse...
- Patent number 4,483,645
- Issue date Nov 20, 1984
- Birmingham Bolt Company
- Claude C. White
- E21 - EARTH DRILLING MINING
Information Patent Grant
Mine roof bolt assembly
- Patent number 4,347,020
- Issue date Aug 31, 1982
- Birmingham Bolt Company
- Claude C. White
- E21 - EARTH DRILLING MINING