| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Sweden | 2 | |
| #2 | Belgium | 1 | |
| #3 | Switzerland | 1 | |
| #4 | Germany | 1 | |
| #5 | Denmark | 1 | |
| #6 | Finland | 1 | |
| #7 | France | 1 | |
| #8 | United Kingdom | 1 | |
| #9 | Netherlands | 1 | |
| #10 | Norway | 1 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines |
| # | Technology | |
|---|---|---|
| #1 | Non-positive-displacement pumps |
| # | Name | Total Patents |
|---|---|---|
| #1 | Freschi Graziella | 7 |
| #2 | Graziella Freschi | 1 |
| Publication | Filing date | Title |
|---|---|---|
| NL8302256A | Portable submersible centrifugal pump - has disc and rotor at ends of motor shaft supported by bearings only | |
| FI831853A0 | Elpump. | |
| BE896725A | Portable submersible centrifugal pump - has disc and rotor at ends of motor shaft supported by bearings only | |
| FR2545887A1 | Submersible centrifugal pump, especially of the portable type | |
| DK195483D0 | Transportable dive pump | |
| DE3312224A1 | Submersible or U-type pump | |
| GB8304477D0 | Submersible pumps | |
| CH652173A5 | Submersible centrifugal electric pump |