Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4925746 | Device for recombing hydrogen and oxygen released in lead-acid storage batteries | Todor V. Donchev, Ivan P. Nikolov, Veneta I. Nikolova, Geno Petkov Papazov, Konstantin Petrov | 1990-05-15 |