| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 8 | |
| #2 | Germany | 5 | |
| #3 | United States | 2 | |
| #4 | Japan | 1 |
| # | Industry | |
|---|---|---|
| #1 | Optics | |
| #2 | Audio-visual technology |
| # | Technology | |
|---|---|---|
| #1 | Cameras | |
| #2 | Special information storage |
| # | Name | Total Patents |
|---|---|---|
| #1 | Beaulieu Marcel | 4 |
| #2 | Beaulieu Jacques | 2 |
| #3 | Mazoyer Jean | 1 |
| #4 | Jiyan Mazowaie | 1 |
| Publication | Filing date | Title |
|---|---|---|
| JPS51140701A | Device for automatically driving performance arm | |
| FR2338505A1 | Sound film camera with overrun facility - has cam releasing pressure on film between driving and pressure rollers | |
| US3972605A | Cinecamera | |
| US4000496A | Filming camera with a synchronous sound recording |