Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5608920 | Diver's face mask with offset purge valve | Bill Oliver | 1997-03-11 |
| D371841 | Diver's mask with offset purge cover | Bill Oliver | 1996-07-16 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5608920 | Diver's face mask with offset purge valve | Bill Oliver | 1997-03-11 |
| D371841 | Diver's mask with offset purge cover | Bill Oliver | 1996-07-16 |