Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6557269 | Method and device for reducing the volume or pressure of a fluid which is driven through an opening by moving surfaces | Ewald G. Welp, Bruno Holtmann, Armin Hutzenlaub, Hans Ruckert | 2003-05-06 |