| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 18 | |
| #2 | France | 2 |
| # | Industry | |
|---|---|---|
| #1 | Telecommunications | |
| #2 | Basic communication technologies | |
| #3 | Measurement | |
| #4 | Chemical engineering |
| # | Technology | |
|---|---|---|
| #1 | Transmission | |
| #2 | Modulation | |
| #3 | Demodulation | |
| #4 | Multiplex communication | |
| #5 | Radio navigation | |
| #6 | Magnetic or electrostatic solid separation | |
| #7 | Amplification control | |
| #8 | Electromechanical clocks | |
| #9 | Broadcast communication |
| # | Name | Total Patents |
|---|---|---|
| #1 | Armstrong Edwin Howard | 2 |
| Publication | Filing date | Title |
|---|---|---|
| GB741861A | Improvements in radio detection and ranging systems | |
| GB629676A | Current limiting devices | |
| GB290642A | Improvements in radio telephone signalling |