| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 9 | |
| #2 | Canada | 3 | |
| #3 | France | 3 | |
| #4 | United Kingdom | 2 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy | |
| #2 | Basic communication technologies |
| # | Technology | |
|---|---|---|
| #1 | Electric discharge tubes | |
| #2 | Demodulation |
| # | Name | Total Patents |
|---|---|---|
| #1 | Bosch Francois Joseph Gerard V | 12 |
| Publication | Filing date | Title |
|---|---|---|
| US2397822A | Electron multiplier | |
| US2342987A | Frequency changing apparatus | |
| GB547010A | Improvements in or relating to thermionic relay apparatus | |
| GB542151A | Improvements in thermionic valve circuits | |
| US2295919A | Electron discharge device | |
| CA408292A | Electron multiplier | |
| CA425120A | Electron multiplier | |
| CA411055A | Electron multiplier |