Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6575425 | Interface valve for vacuum sewer systems | — | 2003-06-10 |
| 6467494 | Arrangement in a vacuum sewer system for preventing water entering a pneumatic controller through a breather line | Claus Kolb, Markus Roediger | 2002-10-22 |