Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5701893 | Disposable face mask | John J. Kern, Richard L. Stein | 1997-12-30 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5701893 | Disposable face mask | John J. Kern, Richard L. Stein | 1997-12-30 |