| # | Industry | |
|---|---|---|
| #1 | Measurement | |
| #2 | Audio-visual technology | |
| #3 | Electrical machinery and energy | |
| #4 | Basic communication technologies | |
| #5 | Optics | |
| #6 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Advertising | |
| #2 | Mechanically-driven clocks | |
| #3 | Electromechanical clocks | |
| #4 | Electronic time-pieces | |
| #5 | Radio-controlled time-pieces | |
| #6 | Electrically-conductive connections | |
| #7 | Locks | |
| #8 | Cameras | |
| #9 | Resonators | |
| #10 | Pulse technique |
| # | Name | Total Patents |
|---|---|---|
| #1 | Derot Marie Therese | 1 |
| Publication | Filing date | Title |
|---|---|---|
| FR2507235A1 | Security lock with delayed key liberation - has time switch clock at back of lock with key trapped by wheel engaging pinion mounted on clock | |
| FR2449366A1 | Pulse transformer for clock control pulses - derives minute switched pulses from half minute non-switched pulses and provides amplification | |
| FR2437040A1 | Multiple advertisement display unit - has panels turned by clock mechanism to show different advertisements in turn |