| Personal data |
| Surname | Vald |
|---|
| Name | Grigory |
|---|
| Patronym | Borisovich |
|---|
| Birth year | 1938 |
|---|
| Birth month | 3 |
|---|
| Birth day | 18 |
|---|
| birth_place | Kharkiv, Ukraine |
|---|
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Rozanov Igor Mikhailovich (1949)
| Personal data |
| Surname | Rozanov |
|---|
| Name | Igor |
|---|
| Patronym | Mikhailovich |
|---|
| Birth year | 1949 |
|---|
| Birth month | 5 |
|---|
| Birth day | 12 |
|---|
| birth_place | Leningrad, now St. Petersburg |
|---|
Rozanov (Rosanov) Igor Mikhailovich (12 May 1949, Leningrad, now St. Petersburg) — mechanical engineer, inventor.
Born into a family of white-collar employees. Member of the CPSU since 1969. In 1971 he graduated from the Riga Polytechnic Institute.
Author of 6 publications and holder of 4 inventor’s certificates.