| English | German | |
|---|---|---|
| Patent | ||
| Patent | gravity filter | Regenerieren |
| Patent | gravity filter | hydraulisch |
| Patent | gravity filter | Schwerkraftfilter |
| Technical | ||
| Technical | gravity filter | Schwerkraftfilter [m/n] |
| English | German | |
|---|---|---|
| Patent | ||
| Patent | gravity filter with loose filtering material | Schwerkraftfilter mit losem Filtermaterial |
| Technical | ||
| Technical | gravity sand filter | druckloser Sandfilter |