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Priority to JP1985179498UpriorityCriticalpatent/JPH04233Y2/ja
Priority to US06/874,580prioritypatent/US4719955A/en
Publication of JPS6288097UpublicationCriticalpatent/JPS6288097U/ja
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Publication of JPH04233Y2publicationCriticalpatent/JPH04233Y2/ja