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Priority to JP10663385UpriorityCriticalpatent/JPH0339294Y2/ja
Priority to US06/883,537prioritypatent/US4717192A/en
Priority to DE19863623515prioritypatent/DE3623515A1/de
Publication of JPS6215023UpublicationCriticalpatent/JPS6215023U/ja
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Publication of JPH0339294Y2publicationCriticalpatent/JPH0339294Y2/ja