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Priority to JP5100288UpriorityCriticalpatent/JPH0532900Y2/ja
Priority to US07/327,253prioritypatent/US4880943A/en
Publication of JPH01155213UpublicationCriticalpatent/JPH01155213U/ja
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Publication of JPH0532900Y2publicationCriticalpatent/JPH0532900Y2/ja