Showalter; William E.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Showalter; William E..The latest application filed is for "geopreater heating method and apparatus".
- Showalter; William E. - Seal Beach CA
- Showalter; William E. - Long Beach CA
| Patent | Date |
|---|---|
| Geopreater heating method and apparatus Grant 5,126,037 - Showalter June 30, 1 | 1992-06-30 |
| Oil recovery method and apparatus Grant 5,040,605 - Showalter August 20, 1 | 1991-08-20 |
| Oil tracing method Grant 4,755,469 - Showalter , et al. July 5, 1 | 1988-07-05 |
| Solution mining process Grant 4,358,158 - Showalter November 9, 1 | 1982-11-09 |
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