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
Priority claimed from SE7700448Aexternal-prioritypatent/SE7700448L/xx
Application filed by Wicksell Hans Ake, Stig Staohl, Ingemar Goesta LoefstedtfiledCriticalWicksell Hans Ake
Publication of FI773594A7publicationCriticalpatent/FI773594A7/fi
Application grantedgrantedCritical
Publication of FI60974BpublicationCriticalpatent/FI60974B/fi
Publication of FI60974CpublicationCriticalpatent/FI60974C/fi