| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 8 | |
| #2 | Germany | 3 | |
| #3 | United Kingdom | 2 | |
| #4 | Sweden | 1 |
| # | Industry | |
|---|---|---|
| #1 | Telecommunications | |
| #2 | Audio-visual technology | |
| #3 | Basic communication technologies | |
| #4 | Electrical machinery and energy | |
| #5 | Measurement |
| # | Technology | |
|---|---|---|
| #1 | Telephonic communication | |
| #2 | Selecting | |
| #3 | Casings and printed circuits | |
| #4 | Resonators | |
| #5 | Measuring electric variables | |
| #6 | Electric switches | |
| #7 | Installation of electric cables |
| # | Name | Total Patents |
|---|---|---|
| #1 | Tarridec Andre | 2 |
| #2 | Tarridec A | 1 |
| #3 | Penn Corentin Jean Louis | 1 |
| #4 | Quere Joseph | 1 |
| #5 | Joubert Jean Leon Marie | 1 |
| #6 | Castex Paul Jean | 1 |
| #7 | Joubert J L M | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE2420773A1 | CALL SIMULATOR | |
| GB1436623A | Signalling receiver | |
| GB1425894A | Telephone line testing devices |