Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5029593 | Device for cleaning of the teeth | — | 1991-07-09 |
| 4304995 | Method and apparatus for measuring the wall thickness in a plastic article | Matti Otala, Jarmo Karvonen, Martti Karppinen, Esko Sohlo | 1981-12-08 |