Donald R. Weir

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Borger, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
CO.sub.2 -induced in-situ gelation of polymeric viscosifiers for pe...
- Patent number 4,657,944
- Issue date Apr 14, 1987
- Phillips Petroleum Company
- Donald D. Bruning
- E21 - EARTH DRILLING MINING