Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6577144 | Electrical voltages and resistances measured to inspect metallic cased wells and pipelines | William Banning Vail, III | 2003-06-10 |
| 6249122 | Electrical voltages and resistances measured to inspect metallic cased wells and pipelines | William Banning Vail, III | 2001-06-19 |
| 6031381 | Electrical voltages and resistances measured to inspect metallic cased wells and pipelines | William Banning Vail, III | 2000-02-29 |
| 5717334 | Methods and apparatus to produce stick-slip motion of logging tool attached to a wireline drawn upward by a continuously rotating wireline drum | William Banning Vail, III | 1998-02-10 |