Patents Assigned to Agrotechnika, narodni podnik
  • Apparatus for the biological purification of water
    Patent number: 4390422
    Abstract: Apparatus for the biological purification of water with the separation of activated sludge by fluid filtration with the spontaneous returning of activated sludge into the activation area or zone, said separation area or zone being arranged above the activation area.
    Type: Grant
    Filed: June 15, 1979
    Date of Patent: June 28, 1983
    Assignee: Agrotechnika, narodni podnik
    Inventors: Svatopluk Mackrle, Vladimir Mackrle, Oldrich Dracka