Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6216285 | Waste transport arrangement | — | 2001-04-17 |
| 5909968 | Vacuum toilet unit | Gunner Lindroos, Roland Mattsson | 1999-06-08 |
| 5644802 | Vacuum sewer arrangement | — | 1997-07-08 |
| 5165457 | Vacuum sewer arrangement | Gunnar Lindroos, Sven Oldfelt | 1992-11-24 |
| 4928326 | Vacuum sewer arrangement | Gunnar Lindroos, Sven Oldfelt | 1990-05-29 |
| 4297751 | Sewer system | Nils Tallberg, Martti Varis | 1981-11-03 |