Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5701892 | Multipurpose face mask that maintains an airspace between the mask and the wearer's face | — | 1997-12-30 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5701892 | Multipurpose face mask that maintains an airspace between the mask and the wearer's face | — | 1997-12-30 |