Renfro; Jimmie Josh
Patent Applications and Registrations
Patent applications and USPTO patent grants for Renfro; Jimmie Josh.The latest application filed is for "down hole drilling assembly with concentric casing actuated jet pump".
- Renfro; Jimmie Josh - Plano TX
| Patent | Date |
|---|---|
| Down hole drilling assembly with concentric casing actuated jet pump Grant 6,899,188 - Hughes , et al. May 31, 2 | 2005-05-31 |
| Down hole drilling assembly with independent jet pump Grant 6,877,571 - Hughes , et al. April 12, 2 | 2005-04-12 |
| Down hole drilling assembly with concentric casing actuated jet pump App 20040188143 - Hughes, William James ; et al. | 2004-09-30 |
| Down hole drilling assembly with independent jet pump App 20030042048 - Hughes, William James ; et al. | 2003-03-06 |
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