| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 15 |
| # | Industry | |
|---|---|---|
| #1 | Optics | |
| #2 | Electrical machinery and energy | |
| #3 | Machines | |
| #4 | Thermal processes | |
| #5 | Audio-visual technology |
| # | Technology | |
|---|---|---|
| #1 | Cameras | |
| #2 | Special electric heating or lighting | |
| #3 | Burners | |
| #4 | Unspecified technologies | |
| #5 | Unspecified technologies | |
| #6 | Television |
| # | Name | Total Patents |
|---|---|---|
| #1 | Roebuck Alvah C | 14 |
| #2 | Mcmillan Frank | 2 |
| #3 | Engelbreit John D | 1 |
| #4 | Brady Glen D | 1 |
| #5 | Larsen Henry A | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US1650881A | Arc lamp | |
| US1677657A | Arc-lamp motor feed | |
| US1659576A | Carbon holder | |
| US1277482A | Motion-picture machine. | |
| US1284371A | Loop-setter. | |
| US1024866A | Reeling mechanism. | |
| US1120086A | Arc-lamp. | |
| US1037325A | Kinetoscope. | |
| US1006406A | Kinetoscope safety-shutter. | |
| US1055492A | Kinetoscope. | |
| US1060128A | Optical projecting apparatus. | |
| US1064010A | Optical projecting apparatus. | |
| US656750A | Generating apparatus for hydrocarbon-vapor lamps. | |
| US656749A | Generating apparatus for hydrocarbon-lamps. | |
| US1138364A | Automatic shutter for kinetoscopes. |