Orval G. Ward

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Bartlesville, OK, US

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Patents Grantslast 30 patents

Information Patent Grant
Clay composition containing a tannin and a method for producing bri...
- Patent number 6,159,886
- Issue date Dec 12, 2000
- Phillips Petroleum Company
- Marshall D. Bishop
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES