Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4291712 | Cigarette filter and filter cigarette | Johannes T. J. Bik, Johannes G. Clardey, Dirk Smorenberg | 1981-09-29 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4291712 | Cigarette filter and filter cigarette | Johannes T. J. Bik, Johannes G. Clardey, Dirk Smorenberg | 1981-09-29 |