| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Switzerland | 5 | |
| #2 | Germany | 3 | |
| #3 | France | 2 | |
| #4 | Austria | 1 | |
| #5 | Belgium | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Chemical engineering | |
| #3 | Engines, pumps and turbines | |
| #4 | Furniture and games |
| # | Technology | |
|---|---|---|
| #1 | Swimming pools | |
| #2 | Non-positive-displacement pumps | |
| #3 | Separation | |
| #4 | Physical training equipment |
| # | Name | Total Patents |
|---|---|---|
| #1 | Amann Werner | 1 |
| #2 | Werner Amann-Aeschi | 1 |
| Publication | Filing date | Title |
|---|---|---|
| FR2237509A6 | Swimming pool filter pump assembly - has floating skimmer unit telescoping over upper end of housing | |
| DE2320209A1 | Swimming pool filter pump - with polyethylene skimmer |