| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 15 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines | |
| #2 | Environmental technology | |
| #3 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Non-positive-displacement pumps | |
| #2 | Venting or aerating devices | |
| #3 | Combustion residues removal |
| # | Name | Total Patents |
|---|---|---|
| #1 | Beck Dipl-Ing Wilhelm | 4 |
| #2 | Schmitt Josef | 3 |
| #3 | Schmitt Joseph | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE725506C | Self-priming centrifugal pump | |
| DE652168C | Centrifugal pump for high inlet pressure |