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 Rettig Strengberg Ab OyfiledCriticalRettig Strengberg Ab Oy
Priority to FI753473ApriorityCriticalpatent/FI54868C/en
Publication of FI753473ApublicationCriticalpatent/FI753473A/fi
Publication of FI54868BpublicationCriticalpatent/FI54868B/en
Application grantedgrantedCritical
Publication of FI54868CpublicationCriticalpatent/FI54868C/en