| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 4 | |
| #2 | France | 3 | |
| #3 | United Kingdom | 3 | |
| #4 | Italy | 3 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines |
| # | Technology | |
|---|---|---|
| #1 | Non-positive-displacement pumps |
| # | Name | Total Patents |
|---|---|---|
| #1 | Fassbeck Walter | 3 |
| #2 | Foos Werner | 2 |
| #3 | Witzel Karlheinz | 1 |
| #4 | Witzel Karl Heinz | 1 |
| #5 | Karl Heinz Witzel | 1 |
| #6 | Rieger Dieter | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE2523230A1 | PLASTIC FAN WHEEL ASSEMBLED FROM INDIVIDUAL COMPONENTS | |
| DE2404300A1 | PLASTIC FAN WHEEL ASSEMBLED FROM INDIVIDUAL COMPONENTS | |
| FR2239141A5 | I.C. engine fan with automatically variable output - has blades comprising thick rigid leading edge and flexible flap | |
| GB1415446A | Self-adjusting fan for internal combustion engines | |
| DE2240011A1 | PLASTIC FAN WHEEL | |
| DE2227049A1 | SELF-ADJUSTING FAN BLADE ON AN AXIAL FAN FOR COMBUSTION ENGINE |