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 Sp Kt Byuro IzolyatoramfiledCriticalSp Kt Byuro Izolyatoram
Priority to FI802958ApriorityCriticalpatent/FI74229C/en
Publication of FI802958ApublicationCriticalpatent/FI802958A/en
Application grantedgrantedCritical
Publication of FI74229BpublicationCriticalpatent/FI74229B/en
Publication of FI74229CpublicationCriticalpatent/FI74229C/en