Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4864933 | Method of rock breakage by blasting | Valentin I. Pshenichny, Revaz A. Chakvetadze, Gennady Y. Krekker | 1989-09-12 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4864933 | Method of rock breakage by blasting | Valentin I. Pshenichny, Revaz A. Chakvetadze, Gennady Y. Krekker | 1989-09-12 |