Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5454936 | Vacuum toilet system | Arne Ask, Sven Oldfelt, Harald A. A. Wallgren | 1995-10-03 |
| 4811754 | Rinse water valve for vacuum toilet system | — | 1989-03-14 |
| 4407326 | Valve actuating mechanism | — | 1983-10-04 |
| 4328822 | Breakaway coupling assembly | — | 1982-05-11 |