Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4901715 | Apparatus and method for breathing through the soil-stack during a high-rise fire | — | 1990-02-20 |
| 4632218 | Sliding descent device | Randy R. Hannan | 1986-12-30 |
| 4385679 | Descent control device | — | 1983-05-31 |