| # | Industry | |
|---|---|---|
| #1 | Optics | |
| #2 | Electrical machinery and energy | |
| #3 | Mechanical elements | |
| #4 | Computer technology | |
| #5 | Measurement |
| # | Technology | |
|---|---|---|
| #1 | Cameras | |
| #2 | Special electric heating or lighting | |
| #3 | Pipes | |
| #4 | Electric discharge tubes | |
| #5 | Analogue computers | |
| #6 | Measuring light |
| Publication | Filing date | Title |
|---|---|---|
| DE1907079A1 | Electron flash device | |
| DE1965937A1 | Switch tubes | |
| DE1907059A1 | Device for controlling capacitor discharge pulses | |
| DE1639137A1 | Lighting and opto-electrical devices | |
| DE1622318A1 | Functional components for electronic flash units | |
| DE1622222A1 | Ferromagnetic devices |