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 Hans Roland ElfgrenfiledCriticalHans Roland Elfgren
Priority to FI761006ApriorityCriticalpatent/FI761006A7/fi
Publication of FI761006A7publicationCriticalpatent/FI761006A7/fi