Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5402323 | Equipment cabinet having spring-elastic seals | Hans-Martin Schwenk, Gerhard Huller | 1995-03-28 |
| 5294748 | Equipment cabinet | Hans-Martin Schwenk, Gerhard Huller | 1994-03-15 |
| 4354939 | Reverse osmosis desalinization utilizing plural flow work exchange vessels | — | 1982-10-19 |
| 4261833 | Method of pretreating raw water for reverse osmosis units | Gerhard Winkler | 1981-04-14 |