Consiliul National Pentru Stiinta Si Tehnologie,Ro
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Priority to RO7166423ApriorityCriticalpatent/RO67483A2/ro
Priority to FR7127681Aprioritypatent/FR2100961B1/fr
Priority to DE19712138001prioritypatent/DE2138001A1/de
Priority to GB3562171Aprioritypatent/GB1337201A/en
Publication of RO67483A2publicationCriticalpatent/RO67483A2/ro