Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5598853 | Ignition device and apparatus for filtering and purifying side-stream and second-hand tobacco smoke | — | 1997-02-04 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5598853 | Ignition device and apparatus for filtering and purifying side-stream and second-hand tobacco smoke | — | 1997-02-04 |