| # | Industry | |
|---|---|---|
| #1 | Optics | |
| #2 | Electrical machinery and energy | |
| #3 | Audio-visual technology | |
| #4 | Transport | |
| #5 | Mechanical elements |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hunger Helmut | 4 |
| #2 | Guelck Erich | 4 |
| #3 | Pfeifer Dipl-Ing Erich | 1 |
| #4 | Hultgren Johannes | 1 |
| #5 | Thomsen Dipl-Ing Werner | 1 |
| #6 | Gulck Erich | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE2911930A1 | Closed circuit TV camera equipment for hazardous locations - incorporates air turbine driven generator and optical signal cable, with light guides connected to monitor | |
| CA679989A | Adapter lamp for use with underwater television cameras | |
| CA686924A | Television camera for interior observation of pipes and the like |