| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 10 | |
| #2 | United Kingdom | 2 | |
| #3 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines | |
| #2 | Thermal processes |
| # | Technology | |
|---|---|---|
| #1 | Non-positive-displacement pumps | |
| #2 | Preheating for stem generation | |
| #3 | Rotary-pistons |
| # | Name | Total Patents |
|---|---|---|
| #1 | Georg Weyland | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB351875A | Improvements in or relating to multi-stage centrifugal pumps | |
| US1765895A | Multistage hot-water centrifugal pump | |
| GB279746A | Improvements in or relating to stuffing boxes for centrifugal pumps | |
| DE539225C | Axial thrust relief by means of stepped relief discs |