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Priority claimed from FI60369Aexternal-prioritypatent/FI51269C/en
Application filed by Pierre Tanguy, Pierre Carre, Jean Le BoulbouechfiledCriticalPierre Tanguy
Application grantedgrantedCritical
Publication of FI51898BpublicationCriticalpatent/FI51898B/fi
Publication of FI51898CpublicationCriticalpatent/FI51898C/en