Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5171027 | High temperature and pressure fluid seal | George H. Johnson, Vinay K. Nilkanth | 1992-12-15 |
| 4291831 | Security housing | — | 1981-09-29 |
| 4267962 | Security system | — | 1981-05-19 |