Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9194508 | Modular valve assembly | Michael Andersen, Herbert Ridder | 2015-11-24 |
| 8252448 | Apparatus for sealing tube plates of batteries | Heinrich Kesper, Ferdinand Von Alvensleben | 2012-08-28 |