Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5674385 | Biofilter load and the method of producing porous-hollow ceramic blocks therefor | Pavel Antonovich Ivaschenko, Jury Ivanovich Matveev, Valery Gavrilovich Besedin, deceased | 1997-10-07 |