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Application filed by American Zinc CompanyfiledCriticalAmerican Zinc Company
Priority to FI160161ApriorityCriticalpatent/FI40052C/en
Publication of FI40052BpublicationCriticalpatent/FI40052B/fi
Application grantedgrantedCritical
Publication of FI40052CpublicationCriticalpatent/FI40052C/en