| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Denmark | 4 | |
| #2 | Austria | 2 | |
| #3 | United Kingdom | 2 | |
| #4 | United States | 2 | |
| #5 | Switzerland | 1 | |
| #6 | Spain | 1 |
| # | Industry | |
|---|---|---|
| #1 | Transport | |
| #2 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Marine propulsion | |
| #2 | Gearing |
| # | Name | Total Patents |
|---|---|---|
| #1 | Jensen Frantz | 11 |
| #2 | Lindholdt Carl | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB191100135A | Improvements in the Propulsion of Ships & the like. | |
| US1023205A | Water-current propulsion for vessels. | |
| GB190513816A | An Electromagnetically Actuated Friction Reversing Gear. | |
| US862400A | Magnetic transmission mechanism. |