Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7500497 | Method of filling compressed-gas containers with gas | Friedel Michel | 2009-03-10 |
| 7490635 | Method for filling a pressure vessel with gas | Hermann Grabhorn, Friedel Michel | 2009-02-17 |