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 Werk Fuer Feuerungstechnik DrefiledCriticalWerk Fuer Feuerungstechnik Dre
Publication of CH80371ApublicationCriticalpatent/CH80371A/de