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Application filed by Johns ManvillefiledCriticalJohns Manville
Priority to FI456/74ApriorityCriticalpatent/FI57396C/fi
Publication of FI45674A7publicationCriticalpatent/FI45674A7/fi
Publication of FI57396BpublicationCriticalpatent/FI57396B/fi
Application grantedgrantedCritical
Publication of FI57396CpublicationCriticalpatent/FI57396C/fi