Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6363934 | Respirator filter protective cover | — | 2002-04-02 |
| 6055983 | Respirator filtration device | — | 2000-05-02 |
| 5988148 | Mounting arrangement for an exhaust gas recirculation pipe on an internal combustion engine | Josef Astner, Reinhard Krosche | 1999-11-23 |
| D414861 | Protective cover for respirator filter | — | 1999-10-05 |
| 5732695 | Respirator filtration device | — | 1998-03-31 |