Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4278641 | Method for extracting rhenium and tungsten from wastes of rhenium-tungsten alloys | Nikolov Y. Petrov, Ognyan D. Bojkov | 1981-07-14 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4278641 | Method for extracting rhenium and tungsten from wastes of rhenium-tungsten alloys | Nikolov Y. Petrov, Ognyan D. Bojkov | 1981-07-14 |