Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4883449 | Device for making grooves in cigarette filters | Erik I. Naslund | 1989-11-28 |
| 4547253 | Device for making grooves in cigarette filters | Steven P. Reed | 1985-10-15 |
| 4517046 | Device for making grooves in cigarette filters | Erik I. Naslund | 1985-05-14 |