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Application filed by Ioan Popa, Ioan Micsa, Vasile HocfiledCriticalIoan Popa
Priority to RO121230ApriorityCriticalpatent/RO94311B1/ro
Publication of RO94311A2publicationCriticalpatent/RO94311A2/fr
Publication of RO94311B1publicationCriticalpatent/RO94311B1/ro
Apparecchiatura idraulica di sicurezza per valvole regolatrici di pressione per l'alimentazione di dispositivi anulari di prevenzione di eruzione di pozzi.