Robert E. Crumb

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Fort Worth, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Method of treating oil-bearing formations using molten sulfur insul...
- Patent number 4,062,405
- Issue date Dec 13, 1977
- Continental Oil Company
- John N. Dew
- E21 - EARTH DRILLING MINING
Information Patent Grant
Method for sealing a permeable subterranean formation
- Patent number 4,034,811
- Issue date Jul 12, 1977
- Continental Oil Company
- Derry D. Sparlin
- E21 - EARTH DRILLING MINING