Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4230191 | Machine for making underground excavations | Valentin K. Svirschevsky, Gennady G. Vasiliev, Ivan P. Leonov | 1980-10-28 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4230191 | Machine for making underground excavations | Valentin K. Svirschevsky, Gennady G. Vasiliev, Ivan P. Leonov | 1980-10-28 |