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Application filed by William KoivulafiledCriticalWilliam Koivula
Priority to FI800895ApriorityCriticalpatent/FI64767C/en
Publication of FI800895ApublicationCriticalpatent/FI800895A/en
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Publication of FI64767BpublicationCriticalpatent/FI64767B/en
Publication of FI64767CpublicationCriticalpatent/FI64767C/en