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Priority to JP12413885UpriorityCriticalpatent/JPH0241341Y2/ja
Priority to US06/894,532prioritypatent/US4925510A/en
Publication of JPS6236044UpublicationCriticalpatent/JPS6236044U/ja
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Publication of JPH0241341Y2publicationCriticalpatent/JPH0241341Y2/ja