| Personal data | |
|---|---|
| Surname | Grinberg |
| Name | Leonid |
| Patronym | Maerovich |
| Sex | M |
Grinberg Leonid Maerovich — jeweller-designer, engineer.
In 1968, Leonid Grinberg worked as a jeweller-designer at the Riga Jewellery Factory. In 1969, he was certified as a First-Class Design Engineer. In 1972, he was promoted to Head of the Design and Technology Bureau of Workshop No. 2. In 1973, he was appointed Deputy Head of Workshop No. 2 for Technical Preparation, and later served as Senior Process Engineer for casting production in Jewellery Workshop No. 2.