| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 13 |
| # | Industry | |
|---|---|---|
| #1 | Environmental technology | |
| #2 | Engines, pumps and turbines | |
| #3 | Machines | |
| #4 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Reduction of greenhouse gas emissions | |
| #2 | Machines for liquids | |
| #3 | Unspecified technologies | |
| #4 | Spraying devices | |
| #5 | Pipes | |
| #6 | Venting or aerating devices | |
| #7 | Steam turbines | |
| #8 | Clutches and brakes | |
| #9 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Doble William A | 12 |
| #2 | Doble William Ashton | 1 |
| #3 | Gfeller Frederick | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US1038538A | Impact water-motor. | |
| US1028554A | Hydro-electric unit. | |
| US1025611A | Means for controlling the discharge from hydraulic motors. | |
| US1027825A | Hydraulic nozzle. | |
| US1076962A | Nozzle for hydraulic motors. | |
| US994505A | Controlling mechanism. | |
| US1025252A | Nozzle for hydraulic motors. | |
| US1076963A | Hydraulic regulating-nozzle. | |
| US884907A | Impact water-wheel. | |
| US896442A | Impact water-motor. | |
| US1030393A | Impact water-motor. | |
| US941440A | Regulating-nozzle. | |
| US926055A | Hydraulic nozzle. |