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Priority to JP3189671UpriorityCriticalpatent/JPS5146259Y2/ja
Priority to DE19722219991prioritypatent/DE2219991C3/de
Publication of JPS4730642UpublicationCriticalpatent/JPS4730642U/ja
Application grantedgrantedCritical
Publication of JPS5146259Y2publicationCriticalpatent/JPS5146259Y2/ja