| # | Industry | |
|---|---|---|
| #1 | Optics | |
| #2 | Measurement | |
| #3 | Electrical machinery and energy | |
| #4 | Computer technology | |
| #5 | Basic communication technologies | |
| #6 | Weapons |
| # | Technology | |
|---|---|---|
| #1 | Optical systems | |
| #2 | Cameras | |
| #3 | Analysing materials | |
| #4 | Measuring length, angles and areas | |
| #5 | Data recognition and presentation | |
| #6 | Electric motor controls | |
| #7 | Weapon sights | |
| #8 | Analogue computers | |
| #9 | Amplifiers | |
| #10 | Electric discharge tubes |
| Publication | Filing date | Title |
|---|---|---|
| FR1520491A | Vari-focal cinematic shooting lens | |
| FR1520489A | Variable focal length lens |