Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5645087 | Method of and apparatus for decontaminating the exposed surfaces of filter mouthpieces in smokers' products | Firdausia Chehab, Stefan Fietkau, Peter-Franz Arnold, Thomas Juschus | 1997-07-08 |