| # | Industry | |
|---|---|---|
| #1 | Audio-visual technology | |
| #2 | Electrical machinery and energy | |
| #3 | Telecommunications | |
| #4 | Digital networks | |
| #5 | Optics | |
| #6 | Machine tools | |
| #7 | Consumer goods |
| # | Technology | |
|---|---|---|
| #1 | Loudspeakers and microphones | |
| #2 | Television | |
| #3 | Special information storage | |
| #4 | Electric discharge tubes | |
| #5 | Making metal sheets | |
| #6 | Cables and insulators | |
| #7 | Sound-producing devices | |
| #8 | Cameras | |
| #9 | Digital information transmission | |
| #10 | Transmission |
| # | Name | Total Patents |
|---|---|---|
| #1 | Backer Franklyn E | 1 |
| Publication | Filing date | Title |
|---|---|---|
| IE10598L | Portable talking motion picture apparatus | |
| CA344407A | Admission counter |