Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6939449 | Water electrolyzer and system | Holger H. Streckert | 2005-09-06 |
| 6447945 | Portable electronic device powered by proton exchange membrane fuel cell | Holger H. Streckert | 2002-09-10 |