Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4848360 | Device for preventing of snoring | Karl-Johan Vikterlof, Carl-Eric Persson, Nils O. Nygren, Torbjorn Birgning | 1989-07-18 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4848360 | Device for preventing of snoring | Karl-Johan Vikterlof, Carl-Eric Persson, Nils O. Nygren, Torbjorn Birgning | 1989-07-18 |