Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5281761 | Grounding pipe/water pipe with compression connectors | H. Thomas Nelson | 1994-01-25 |
| 5005485 | Power booster bushing | Robert K. Annan | 1991-04-09 |
| 4696449 | Security device for electronic equipment | Z. Mamak | 1987-09-29 |