| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Denmark | 5 | |
| #2 | Canada | 3 | |
| #3 | Switzerland | 2 | |
| #4 | United Kingdom | 2 | |
| #5 | United States | 2 | |
| #6 | Austria | 1 | |
| #7 | Spain | 1 |
| # | Industry | |
|---|---|---|
| #1 | Transport |
| # | Technology | |
|---|---|---|
| #1 | Aeroplanes |
| # | Name | Total Patents |
|---|---|---|
| #1 | Johansson Carl Alfred | 13 |
| #2 | Carl Alfred Johansson | 2 |
| #3 | Christophersen Hans C B | 1 |
| Publication | Filing date | Title |
|---|---|---|
| ES114956A1 | Device to pick up. | |
| CA192695A | Ruler for curves | |
| GB120311A | Improvements in Devices for the Stabilization of Aeroplanes. | |
| US1274888A | Stabilization of aircraft. | |
| US1223698A | Stabilization of aircraft. | |
| GB104346A | Improvements in the Stabilisation of Air-craft. | |
| CA160721A | Pulley block | |
| CA300695A | Pulley block |