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 F L Smidth & Co FafiledCriticalF L Smidth & Co Fa
Application grantedgrantedCritical
Publication of AT74032BpublicationCriticalpatent/AT74032B/de