Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5128221 | Storage battery | Toivo Karn/a, Jukka-Pekka Nieminen, Asko Maisti, Esko Savolainen | 1992-07-07 |
| 4973533 | Gas vault structure for a storage battery | Jukka-Pekka Nieminen, Asko Maisti, Toivo Karna, Esko Savolainen, Niilo Jaasko | 1990-11-27 |