Karl-Heinz Gaida

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Wietze, DE

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Patents Grantslast 30 patents

Information Patent Grant
Method of recovering petroleum and bitumen from subterranean reserv...
- Patent number 4,252,191
- Issue date Feb 24, 1981
- Deutsche Texaco Aktiengesellschaft
- Gunter Pusch
- E21 - EARTH DRILLING MINING