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Patent applications and USPTO patent grants for Walther; John D..The latest application filed is for "petroleum exploration and prediction apparatus and method".
Patent | Date |
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Petroleum exploration and prediction apparatus and method Grant 6,952,649 - Cook , et al. October 4, 2 | 2005-10-04 |
Petroleum exploration and prediction apparatus and method Grant 6,904,367 - Cook , et al. June 7, 2 | 2005-06-07 |
Petroleum exploration and prediction apparatus and method App 20040114464 - Cook, Daniel R. ;   et al. | 2004-06-17 |
Petroleum exploration and prediction apparatus and method App 20040068375 - Cook, Daniel R. ;   et al. | 2004-04-08 |
Shock proof carrying enclosure for musical instrument Grant 4,846,340 - Walther July 11, 1 | 1989-07-11 |
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