Darrell L. Krieger

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Calgary, CA

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Patents Grantslast 30 patents

Information Patent Grant
Method for reducing borehole erosion in shale formations
- Patent number 6,422,325
- Issue date Jul 23, 2002
- Halliburton Energy Services, Inc.
- Darrell L. Krieger
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...