| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 10 | |
| #2 | France | 2 | |
| #3 | United Kingdom | 2 | |
| #4 | Austria | 1 | |
| #5 | Switzerland | 1 | |
| #6 | Germany | 1 | |
| #7 | Spain | 1 |
| # | Industry | |
|---|---|---|
| #1 | Optics | |
| #2 | Audio-visual technology | |
| #3 | Basic communication technologies |
| # | Technology | |
|---|---|---|
| #1 | Cameras | |
| #2 | Processing photographic materials | |
| #3 | Special information storage | |
| #4 | Amplification control |
| # | Name | Total Patents |
|---|---|---|
| #1 | Balsley James R | 3 |
| #2 | Leo Jack G | 3 |
| #3 | Colby Stevens Robert | 2 |
| #4 | Grover Laube | 2 |
| #5 | Asher Flint | 2 |
| #6 | Film Corporation Fox | 1 |
| #7 | Albert Kaufman Edwin | 1 |
| #8 | Melvin Miller Charles | 1 |
| #9 | Kohlmeier George J | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2104936A | Focusing device for motion picture cameras | |
| US2104948A | Motion picture camera | |
| US2006464A | Lens mount for cameras | |
| US1837223A | Self-aligning roller for developing machines | |
| US1794664A | Method of and system for recording and reproducing sound | |
| US1881040A | Sound recording system | |
| US1827735A | Volume control in sound record reproduction | |
| GB328038A | Film printing machine | |
| GB328009A | Film printing machine | |
| US1855827A | Film printing machine | |
| US1864238A | Film printing machine | |
| US1714605A | Film-splicing machine | |
| DE476204C | Device for splicing cinematographic films |