Plot
The self-taught inventor Kostylin, convinced of the expediency of his latest work, this time decided to seek recognition to the end.
| Writer | Ivan Kiasashvili |
|---|---|
| Director | Ivan Kiasashvili |
| Actor | Aleksandr Zbruev, Tamara Degtyaryova, Valeriy Priyomykhov |
| Country | Soviet Union |
| Production | Mosfilm |