Issued Patents 2004
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6681412 | PTFE membrane filter for exhaust air of vacuum toilet system | Wolfgang Erdmann, Carsten Ohlfest | 2004-01-27 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6681412 | PTFE membrane filter for exhaust air of vacuum toilet system | Wolfgang Erdmann, Carsten Ohlfest | 2004-01-27 |