Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5641585 | Miniature ceramic fuel cell | Paul A. Lessing | 1997-06-24 |
| 5593509 | Portable thermo-photovoltaic power source | Barton Krawetz, C. Rodger Barklund, Gary D. Seifert | 1997-01-14 |