Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6796307 | Multiple person high altitude recycling breathing apparatus | Kirk Vanzandt, Ken R. Powell | 2004-09-28 |
| 6471366 | Depth-compensated underwater light | Bill Olstad | 2002-10-29 |