Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5692250 | Vacuum toilet system with treated rinse liquid | Sven Oldfelt, Gary L. Stahl, Lars Erik A. E. Glas, Anders G. Ostman | 1997-12-02 |
| 5002592 | Waste tank for a vacuum sewage system | Lennart Stroby, Ake Nilsson, Arne Ask, Gary L. Stahl, Sven Oldfelt | 1991-03-26 |