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Filing date
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Application filed by Per Arno JaatinenfiledCriticalPer Arno Jaatinen
Priority to FI2324/74ApriorityCriticalpatent/FI53691C/fi
Priority to DE19742446464prioritypatent/DE2446464A1/de
Publication of FI232474A7publicationCriticalpatent/FI232474A7/fi
Application grantedgrantedCritical
Publication of FI53691BpublicationCriticalpatent/FI53691B/fi
Publication of FI53691CpublicationCriticalpatent/FI53691C/fi