|
US3984326A
|
|
Gravity filtering equipment
|
|
CH530940A
|
|
Sewage clarifier tank - rectangular in plan view and prismatic in section
|
|
CH502275A
|
|
Liquid purifier
|
|
ES308737A3
|
|
Installation for the treatment of wastewater. (Machine-translation by Google Translate, not legally binding)
|
|
ES308736A3
|
|
Development installation. (Machine-translation by Google Translate, not legally binding)
|
|
DE1459503A1
|
|
Device for separating sand
|
|
DE908968C
|
|
Fumigation device for liquids
|
|
DE893470C
|
|
Device for the ventilation of fluids, e.g. B. water
|
|
GB597491A
|
|
Filtering equipment with automatic cleaning
|
|
CA633822A
|
|
Method and device for removing sand from water
|
