| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Switzerland | 9 | |
| #2 | Austria | 2 | |
| #3 | United Kingdom | 1 | |
| #4 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines | |
| #2 | Mechanical elements | |
| #3 | Transport |
| # | Technology | |
|---|---|---|
| #1 | Non-positive-displacement pumps | |
| #2 | Aeroplanes | |
| #3 | Venting or aerating devices |
| # | Name | Total Patents |
|---|---|---|
| #1 | Brunner Otto | 11 |
| #2 | Otto Brunner | 2 |
| Publication | Filing date | Title |
|---|---|---|
| US1105753A | Screw-propeller for aeroplanes, airships, vessels, and the like. | |
| GB191302094A | An Improved Screw Propeller for Aeroplanes, Airships, Vessels and the like. |