| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 17 | |
| #2 | Germany | 3 | |
| #3 | United Kingdom | 2 | |
| #4 | United States | 2 |
| # | Industry | |
|---|---|---|
| #1 | Measurement | |
| #2 | Optics | |
| #3 | Control | |
| #4 | Weapons | |
| #5 | Audio-visual technology | |
| #6 | Chemical engineering |
| # | Technology | |
|---|---|---|
| #1 | Measuring distances | |
| #2 | Optical systems | |
| #3 | Weapon sights | |
| #4 | Advertising | |
| #5 | Alarm systems | |
| #6 | Teaching materials | |
| #7 | Separating solids | |
| #8 | Cameras |
| # | Name | Total Patents |
|---|---|---|
| #1 | Stroud William | 17 |
| #2 | Barr Archibald | 17 |
| #3 | Archibald Barr | 2 |
| #4 | William Stroud | 2 |
| #5 | French James Weir | 1 |
| #6 | D Albe Edmund Edward Fournier | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB235738A | Apparatus for sorting or separating granular and like materials | |
| US1329356A | Mechanism and range-finder for measuring vertical heights | |
| US1343025A | Long-base single-observer range-finder | |
| GB191503318A | Improvements in Artificial Horizons. |