Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7815193 | Dry-running piston rod sealing arrangement, and method for sealing a piston rod using one such arrangement | Norbert Feistel | 2010-10-19 |
| 6149400 | Method and apparatus for a suction valve of the plate-type construction | Christian Keller | 2000-11-21 |