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 Erkki VesterinenfiledCriticalErkki Vesterinen
Priority to FI844324ApriorityCriticalpatent/FI74800C/en
Publication of FI844324A0publicationCriticalpatent/FI844324A0/en
Publication of FI844324LpublicationCriticalpatent/FI844324L/en
Publication of FI74800BpublicationCriticalpatent/FI74800B/en
Application grantedgrantedCritical
Publication of FI74800CpublicationCriticalpatent/FI74800C/en