| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 11 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy | |
| #2 | Packaging and shipping | |
| #3 | Machine tools | |
| #4 | Basic communication technologies | |
| #5 | Textiles and paper |
| # | Technology | |
|---|---|---|
| #1 | Dynamo-electric machines | |
| #2 | Elevators and escalators | |
| #3 | Punching metal | |
| #4 | Electric motor controls | |
| #5 | Pulse technique | |
| #6 | Mechanical paper working | |
| #7 | Magnets and transformers |
| Publication | Filing date | Title |
|---|---|---|
| FR2301164A7 | Speed control for asynchronous motor - with thyristors and magnetic amplifier circuits to provide progressive control to high speeds |