Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5056619 | Controlled descent device | John E. Darnell | 1991-10-15 |
| 4768619 | Fire escape device | — | 1988-09-06 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5056619 | Controlled descent device | John E. Darnell | 1991-10-15 |
| 4768619 | Fire escape device | — | 1988-09-06 |