Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4991145 | Infra-sonic detector and alarm with self adjusting reference | Steven G. Goldstein, James E. Randall, Gary E. Vanyek | 1991-02-05 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4991145 | Infra-sonic detector and alarm with self adjusting reference | Steven G. Goldstein, James E. Randall, Gary E. Vanyek | 1991-02-05 |