Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Andrzej KielafiledCriticalAndrzej Kiela
Priority to PL32781498ApriorityCriticalpatent/PL327814A1/en
Publication of PL327814A1publicationCriticalpatent/PL327814A1/en
PL32781498A1998-08-041998-08-04Method of thickening excessive sludge produced as result of biological sewage treatment and apparatus therefor
PL327814A1
(en)