| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 5 | |
| #2 | Austria | 2 | |
| #3 | Switzerland | 2 | |
| #4 | Denmark | 2 | |
| #5 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines | |
| #2 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Spraying devices | |
| #2 | Internal-combustion piston engines | |
| #3 | Supplying combustion engines |
| # | Name | Total Patents |
|---|---|---|
| #1 | Doerwald Gottfried Ludwig Max | 10 |
| #2 | Ludwig Max Doerwald Gottfried | 2 |
| #3 | Bailey George Edward | 1 |
| #4 | Steer Alfred | 1 |
| #5 | Lecoche Jules | 1 |
| #6 | Charles Henry Grant | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US1102019A | Internal-combustion engine. | |
| GB191113769A | Improvements in Two-stroke Internal Combustion Engines. | |
| GB190909273A | An Improved Fountain for Decorative and other purposes. | |
| GB190821899A | Improvements in the Propulsion of Vessels by High-speed Engines and Motors. | |
| GB190515335A | A Hydraulic Power Transmission Apparatus | |
| GB190511404A | Improvements in Carburetters for Internal Combustion Engines. |