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 US05/936,807external-prioritypatent/US4229696A/en
Application filed by Adolf Gunnar GustafsonfiledCriticalAdolf Gunnar Gustafson
Publication of FI792649ApublicationCriticalpatent/FI792649A/fi
Application grantedgrantedCritical
Publication of FI79192BpublicationCriticalpatent/FI79192B/fi
Publication of FI79192CpublicationCriticalpatent/FI79192C/fi