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 Brita HeseliusfiledCriticalBrita Heselius
Priority to FI913921ApriorityCriticalpatent/FI86029C/fi
Publication of FI913921A0publicationCriticalpatent/FI913921A0/fi
Publication of FI86029BpublicationCriticalpatent/FI86029B/fi
Publication of FI913921ApublicationCriticalpatent/FI913921A/fi
Application grantedgrantedCritical
Publication of FI86029CpublicationCriticalpatent/FI86029C/fi