| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 4 | |
| #2 | United Kingdom | 3 | |
| #3 | Austria | 2 | |
| #4 | United States | 2 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines | |
| #2 | Mechanical elements | |
| #3 | Environmental technology |
| # | Name | Total Patents |
|---|---|---|
| #1 | Vollmer Joseph | 11 |
| Publication | Filing date | Title |
|---|---|---|
| DE873771C | Diesel engine working with self-ignition or medium-pressure internal combustion engine working with external ignition | |
| GB191219967A | Improvements in and connected with the Fuel Nozzles of Internal Combustion Engines. | |
| GB191212700A | Improved Reversing Means for Internal Combustion Engines. | |
| US1042989A | Reversing-gear for multiple-cylinder combustion-engines. | |
| GB191102791A | Improvements in Valve Gear for Reversible Internal Combustion Engines. | |
| US1062132A | Explosion-motor. |