 |
| |||
| B-Verfahren n (противофазной записи) | |||
| класс Б: 14 phrases in 4 subjects |
| Cinema equipment | 5 |
| Food industry | 1 |
| Photographical sound recording | 7 |
| Sound recording | 1 |
|
| |||
| B-Verfahren n (противофазной записи) | |||
| класс Б: 14 phrases in 4 subjects |
| Cinema equipment | 5 |
| Food industry | 1 |
| Photographical sound recording | 7 |
| Sound recording | 1 |