Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4828217 | Molding apparatus for production of concrete box-units | Anatoli M. Hadjiiski, Hristo P. Varbanov, Michail T. Mishonov, Vladimir P. Stamov, Rosen P. Savov +2 more | 1989-05-09 |