| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 10 | |
| #2 | Germany | 1 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines | |
| #2 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Non-positive-displacement pumps | |
| #2 | Special non-positive-displacement engines | |
| #3 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Aladar Hollander | 10 |
| Publication | Filing date | Title |
|---|---|---|
| US1997061A | Rotary hydraulic machine | |
| US1979622A | Rotary hydraulic machine | |
| US1979621A | Balanced turbulence pump | |
| US1525737A | Hydraulic balance for multistage pumps | |
| US1525736A | Multistage centrifugal pump | |
| US1535414A | Deep-well pump head | |
| US1535415A | Screw pump | |
| US1530724A | Head for vertical pumps and the like | |
| US1499056A | Centrifugal pump | |
| US1485504A | Centrifugal pump |