| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 10 | |
| #2 | France | 2 | |
| #3 | United Kingdom | 2 |
| # | Industry | |
|---|---|---|
| #1 | Control | |
| #2 | Environmental technology | |
| #3 | Engines, pumps and turbines | |
| #4 | Agriculture |
| # | Technology | |
|---|---|---|
| #1 | Systems controlling non-electric variables | |
| #2 | Reduction of greenhouse gas emissions | |
| #3 | Machines for liquids | |
| #4 | Horticulture |
| # | Name | Total Patents |
|---|---|---|
| #1 | Honold Robert | 2 |
| Publication | Filing date | Title |
|---|---|---|
| DE616763C | Water turbine with constant pressure effect and axially right flow of water around the entire circumference of the impeller | |
| GB178434A | Governable water turbine with cylinder gate | |
| GB187032A | Improvement in entrance chambers for water turbines | |
| DE491475C | Water turbine with a lying shaft in an open shaft |