| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 20 | |
| #2 | Germany | 3 | |
| #3 | United Kingdom | 3 | |
| #4 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Measurement | |
| #2 | Weapons | |
| #3 | Control | |
| #4 | Electrical machinery and energy | |
| #5 | Telecommunications | |
| #6 | Mechanical elements | |
| #7 | Transport |
| # | Technology | |
|---|---|---|
| #1 | Measuring distances | |
| #2 | Weapon sights | |
| #3 | Systems controlling non-electric variables | |
| #4 | Measuring speed and acceleration | |
| #5 | Electric motor controls | |
| #6 | Transmission systems | |
| #7 | Radio navigation | |
| #8 | Vehicle wheels | |
| #9 | Alarm systems | |
| #10 | Gearing |
| # | Name | Total Patents |
|---|---|---|
| #1 | Pollen Arthur Hungerford | 20 |
| #2 | Isherwood Harold | 16 |
| #3 | Taylor Harold Dennis | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB144161A | Improvements in and relating to indicators for distance travelled for use in aircraft | |
| GB155030A | Improvements in fire control and gunlaying apparatus | |
| GB137257A | Improvements in course setting and navigating instruments for aircraft | |
| US1140010A | Optical instrument especially applicable to range-finders. |