| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 32 |
| # | Industry | |
|---|---|---|
| #1 | Telecommunications | |
| #2 | Electrical machinery and energy | |
| #3 | Basic communication technologies | |
| #4 | Computer technology | |
| #5 | Control |
| # | Technology | |
|---|---|---|
| #1 | Selecting | |
| #2 | Telephonic communication | |
| #3 | Electric switches | |
| #4 | Electric digital data processing | |
| #5 | Waveguides | |
| #6 | Transmission systems | |
| #7 | Registering devices | |
| #8 | Pulse technique | |
| #9 | Static stores | |
| #10 | Code conversion |
| # | Name | Total Patents |
|---|---|---|
| #1 | Ruettinger Ruediger | 1 |
| #2 | Nickel Horst | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE2020262A1 | Circuit arrangement for telecommunications, in particular telephone systems with connection units combined in groups |