McWilliams; Ronald L.
Patent Applications and Registrations
Patent applications and USPTO patent grants for McWilliams; Ronald L..The latest application filed is for "self leveling underground marker".
- McWilliams; Ronald L. - Mineral Wells TX
| Patent | Date |
|---|---|
| Self leveling underground marker Grant 6,380,857 - Galloway , et al. April 30, 2 | 2002-04-30 |
| Passive electrical marker for underground use and method of making thereof Grant 6,097,293 - Galloway , et al. August 1, 2 | 2000-08-01 |
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