Issued Patents 1982
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4337078 | Substrate for cultivation of agricultural crops and rooting of green cuttings in greenhouses and in open air | Georgi S. Petrov, Ivan Petkov, Hristo I. Etropolski, Dimiter N. Dimitrov, Atanas I. Uzunov | 1982-06-29 |