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Priority to JP4678887UpriorityCriticalpatent/JPS63155571U/ja
Publication of JPS63155571UpublicationCriticalpatent/JPS63155571U/ja
Anello per il bloccaggio del coperchio, su fusti in fibra e simili, provvisto di un meccanismo a leva agganciato meccanicamente, ad incastro, all'anello medesimo.
