Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6243887 | Sewer system | Bjorn von Varfalva Palffy, Bengt Ohlsson | 2001-06-12 |
| 5944118 | Pneumatic impact breaker | Ingemar Johansson | 1999-08-31 |
| 5921327 | Pneumatic impact tool having an integrally formed one-piece housing | Stig Roland Henriksson | 1999-07-13 |
| 5775196 | Valve arrangement in compressed air driven motors | Roland Henriksson | 1998-07-07 |
| 5749421 | Pneumatic impact breaker | Ingemar Johansson | 1998-05-12 |
| 5002592 | Waste tank for a vacuum sewage system | Lennart Stroby, Arne Ask, Gary L. Stahl, Sven Oldfelt, Paul L. Dubler | 1991-03-26 |
| 4865631 | Vacuum sewage system | Lennart Stroby, Arne Ask | 1989-09-12 |