Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5661284 | Commercial transaction system | James F. Hann | 1997-08-26 |
| 4528559 | Seismic actuation system | — | 1985-07-09 |
| 4408196 | Seismic alarm system | — | 1983-10-04 |
| 4320611 | Fire retardant seal | — | 1982-03-23 |