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Patent applications and USPTO patent grants for Robbins; Carl Arthur.The latest application filed is for "acoustic logging while drilling tool to determine bed boundaries".
Patent | Date |
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Acoustic logging while drilling tool to determine bed boundaries Grant 5,678,643 - Robbins , et al. October 21, 1 | 1997-10-21 |
Acoustic Transducer for LWD tool Grant 5,644,186 - Birchak , et al. July 1, 1 | 1997-07-01 |
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