Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7618246 | Eccentric screw pump having conical sealing surfaces | Herbert Frisch, Michael Robby | 2009-11-17 |
| 7104770 | Eccentric screw-type pump with spare stator | Helmut Bauer, Christoph Boehnisch, Reinhard Denk, Matthias Gradl, Michael Groth +14 more | 2006-09-12 |