Hearn; Daniel P.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Hearn; Daniel P..The latest application filed is for "logging probe for making redox potential measurements".
- Hearn; Daniel P. - Richardson TX
- Hearn; Daniel P. - Tulsa OK
| Patent | Date |
|---|---|
| Logging probe for making redox potential measurements Grant 4,088,945 - Howell , et al. May 9, 1 | 1978-05-09 |
| Method and apparatus for recording position of sensor in airborne magnetic surveying Grant 3,976,937 - Hearn August 24, 1 | 1976-08-24 |
| Method And Apparatus For Monitoring The Sand Concentration In A Flowing Well Grant 3,854,323 - Hearn , et al. December 17, 1 | 1974-12-17 |
| Synchronized Period Measuring System Grant 3,728,613 - Hearn April 17, 1 | 1973-04-17 |
| Method And Apparatus Providing A Difference Signal Indicative Of Radiation Absorption In A Magnetometer Grant 3,629,694 - Hearn December 21, 1 | 1971-12-21 |
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