| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 9 | |
| #2 | France | 2 | |
| #3 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Engines, pumps and turbines | |
| #3 | Civil engineering | |
| #4 | Thermal processes |
| # | Technology | |
|---|---|---|
| #1 | Venting or aerating devices | |
| #2 | Water-closets with flushing devices | |
| #3 | Machines | |
| #4 | Internal-combustion piston engines | |
| #5 | Rotary pistons | |
| #6 | Controlling combustion |
| # | Name | Total Patents |
|---|---|---|
| #1 | Rost Richard | 2 |
| Publication | Filing date | Title |
|---|---|---|
| GB168260A | Improvements in valves and cocks |