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Application filed by Hans Arne Valentin JohanssonfiledCriticalHans Arne Valentin Johansson
Priority to FI761850ApriorityCriticalpatent/FI64830C/fi
Publication of FI761850A7publicationCriticalpatent/FI761850A7/fi
Publication of FI64830BpublicationCriticalpatent/FI64830B/fi
Application grantedgrantedCritical
Publication of FI64830CpublicationCriticalpatent/FI64830C/fi