Roy C. Flanagan

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Dallas, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Tunnel barrier system and method of installing the same
- Patent number 5,439,319
- Issue date Aug 8, 1995
- Carlisle Coatings & Water Proofing, Incorporated
- Roy C. Flanagan
- E21 - EARTH DRILLING MINING