Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5699792 | Face mask with enhanced facial seal | Albert R. Rich, Jr., Kevin K. Brunson | 1997-12-23 |
| 5694925 | Face mask with enhanced seal and method | Albert R. Rich, Jr., Kevin K. Brunson | 1997-12-09 |