| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 40 | |
| #2 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Optics | |
| #2 | Audio-visual technology | |
| #3 | Consumer goods | |
| #4 | Telecommunications | |
| #5 | Organic fine chemistry | |
| #6 | Machines | |
| #7 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Cameras | |
| #2 | Loudspeakers and microphones | |
| #3 | Special information storage | |
| #4 | Heterocyclic compounds | |
| #5 | Electrophonic musical instruments | |
| #6 | Selecting | |
| #7 | Unspecified technologies | |
| #8 | Sound-producing devices | |
| #9 | Optical systems | |
| #10 | Clutches and brakes |
| # | Name | Total Patents |
|---|---|---|
| #1 | Laudet Georges | 8 |
| #2 | Gaumont Leon | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US759693A | Apparatus for synchronously operating phonographs and kinematographs. |