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 Leif JohanssonfiledCriticalLeif Johansson
Priority to FI802069ApriorityCriticalpatent/FI66047C/en
Publication of FI802069ApublicationCriticalpatent/FI802069A/en
Application grantedgrantedCritical
Publication of FI66047BpublicationCriticalpatent/FI66047B/en
Publication of FI66047CpublicationCriticalpatent/FI66047C/en