| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 12 | |
| #2 | Germany | 1 | |
| #3 | United Kingdom | 1 | |
| #4 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Measurement | |
| #2 | Electrical machinery and energy | |
| #3 | Computer technology | |
| #4 | Mechanical elements |
| # | Name | Total Patents |
|---|---|---|
| #1 | Jean Lombard | 1 |
| #2 | Jean Mazoyer | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE853219C | Electric pressure indicator with elastic membrane that responds to changes in the pressure of a pressure medium and triggers a signal | |
| US2744977A | Electric signalizing pressure sensitive indicator | |
| GB298149A | Improvements relating to distance fuel gauge for automobile vehicles |