Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5655340 | Stable open-sided shelter | — | 1997-08-12 |
| 4941499 | Ground tent with external frame and improved subframe therefor | Mark R. Niksic | 1990-07-17 |
| 4285269 | Portable ventilating apparatus for purging underground installations and the like | Allan E. Beavers | 1981-08-25 |
| 4207685 | Air distribution sheath | Allan E. Beavers | 1980-06-17 |