Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6457538 | Advanced coring apparatus and method | Gerard T. Pittard, Curtis E. Leitko, Jr., William J. McDonald | 2002-10-01 |
| 6313755 | Downhole buried utility sensing and data transmission system and method | William J. McDonald, Gerard T. Pittard | 2001-11-06 |