| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 6 | |
| #2 | United States | 5 | |
| #3 | Germany | 3 |
| # | Industry | |
|---|---|---|
| #1 | Digital networks |
| # | Technology | |
|---|---|---|
| #1 | Digital information transmission |
| # | Name | Total Patents |
|---|---|---|
| #1 | Yoshito Watanabe | 5 |
| Publication | Filing date | Title |
|---|---|---|
| GB475954A | A relay system for measuring the time of the continuous flow of an electric current | |
| US2118424A | Relay system for measuring the time of the continuous flow of an electric current | |
| GB468230A | Improvements in apparatus for responding only to a predetermined series of electric signals | |
| US2116990A | Selector apparatus | |
| GB436423A | Improvements in or relating to electric telegraph receiving systems |