| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 9 | |
| #2 | France | 5 | |
| #3 | United States | 5 | |
| #4 | Australia | 4 | |
| #5 | South Africa | 4 | |
| #6 | Sweden | 3 | |
| #7 | Brazil | 2 | |
| #8 | Italy | 2 | |
| #9 | Switzerland | 1 | |
| #10 | Spain | 1 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines | |
| #2 | Civil engineering | |
| #3 | Chemical engineering | |
| #4 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Non-positive-displacement pumps | |
| #2 | Swimming pools | |
| #3 | Special non-positive-displacement engines | |
| #4 | Separation | |
| #5 | Special machines | |
| #6 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Speck W | 11 |
| #2 | Speck Walter | 9 |
| #3 | Schmidt Oskar | 5 |
| #4 | Speck Willy | 2 |
| #5 | Schmidt O | 2 |
| #6 | Speck Willi | 2 |
| #7 | Herger Armin | 1 |
| #8 | Willy Speck | 1 |
| #9 | Zirkel Karl | 1 |
| #10 | Speck Wilhelm Erich | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2015063987A1 | Modular feed pump for fluid media | |
| DE3437365A1 | Circulation and filter apparatus for baths | |
| ES456704A1 | Device for cleaning and circulating a liquid | |
| US3920352A | Pump with plastic housing | |
| DE2347915A1 | SELF-PRIMING CENTRIFUGAL PUMP | |
| AU4476072A | Centrifugal pump of synthetic material | |
| ZA7204691B | Centrifugal pump of synthetic material | |
| DE2209056A1 | DEVICE FOR GENERATING A WATER FLOW IN A SWIMMING POOL | |
| US3685919A | Circulating pump |