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Application filed by Vladimir Petrovich Nikolaev, Leopold Iosifovich Chaika, Ivan Vasilievich IvanovfiledCriticalVladimir Petrovich Nikolaev
Priority to FI773194ApriorityCriticalpatent/FI64860C/en
Publication of FI773194ApublicationCriticalpatent/FI773194A/en
Publication of FI64860BpublicationCriticalpatent/FI64860B/en
Application grantedgrantedCritical
Publication of FI64860CpublicationCriticalpatent/FI64860C/en