Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5229166 | Cigarette filter rod and method of making same | Eduard Ringgenberg | 1993-07-20 |
| 4197010 | Length standard comparison method and apparatus utilizing holographic interferrometry | Patrick Meyrueis | 1980-04-08 |