Issued Patents All Time
Showing 26–29 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5909130 | Digital lock detector for phase-locked loop | Scott W. McLellan | 1999-06-01 |
| 5697449 | Apparatus and method for temporary subsurface well sealing and equipment anchoring | Gregory E. Hennig, Mark McCorry | 1997-12-16 |
| 5553121 | Voice response system | Lawrence Leon Porter | 1996-09-03 |
| 4974646 | Powder flow control valve | Roderick MacDonald | 1990-12-04 |