Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4931638 | Method of monitoring hidden coal-rock interface and transducer realizing this method | Alexandr A. Tsvetkov, Alexandr M. Onischenko, Anatoly I. Kandala, Valery G. Khrapov, Georgy M. Nunuparov +6 more | 1990-06-05 |