PL330130A1 - Method of effectively preventing backflow of gaseous medium extracted from rooms through ventilation ducts in multiple-storied building and apparatus therefor
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Method of effectively preventing backflow of gaseous medium extracted from rooms through ventilation ducts in multiple-storied building and apparatus therefor
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Application filed by Zbigniew WedrychowiczfiledCriticalZbigniew Wedrychowicz
Priority to PL98330130ApriorityCriticalpatent/PL189678B1/en
Publication of PL330130A1publicationCriticalpatent/PL330130A1/en
Publication of PL189678B1publicationCriticalpatent/PL189678B1/en
PL98330130A1998-12-041998-12-04Method of effectively preventing backflow of gaseous medium extracted from rooms through ventilation ducts in multiple-storied building and apparatus therefor
PL189678B1
(en)
Method of effectively preventing backflow of gaseous medium extracted from rooms through ventilation ducts in multiple-storied building and apparatus therefor
Method of effectively preventing backflow of gaseous medium extracted from rooms through ventilation ducts in multiple-storied building and apparatus therefor
Method of effectively preventing backflow of gaseous medium extracted from rooms through ventilation ducts in multiple-storied building and apparatus therefor
Method of effectively preventing backflow of gaseous medium extracted from rooms through ventilation ducts in multiple-storied building and apparatus therefor