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Priority to JP17776386UpriorityCriticalpatent/JPH049154Y2/ja
Priority to DE19873737598prioritypatent/DE3737598C2/de
Priority to US07/117,160prioritypatent/US4993933A/en
Publication of JPS6382532UpublicationCriticalpatent/JPS6382532U/ja
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Publication of JPH049154Y2publicationCriticalpatent/JPH049154Y2/ja