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Publication date
Application filed by Virgil Dobrota, Elisabeta Francu, DOINA-MIOARA BîSCA, Ioan BalaneanfiledCriticalVirgil Dobrota
Priority to RO121087ApriorityCriticalpatent/RO93281B1/ro
Publication of RO93281A2publicationCriticalpatent/RO93281A2/ro
Publication of RO93281B1publicationCriticalpatent/RO93281B1/ro
Inventia se refera la o compozitie pentru mine subtiri de creion comtinînd: material argilos, grafit, negru de fum. liant, agent activ de suprafata si apa.
RO121087A1985-12-101985-12-10Compozitie pentru mine subtiri de creion
RO93281B1
(ro)