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Priority to JP1990122581UpriorityCriticalpatent/JP2555031Y2/ja
Priority to US07/732,395prioritypatent/US5243480A/en
Publication of JPH0481282UpublicationCriticalpatent/JPH0481282U/ja
Priority to US08/002,731prioritypatent/US5396385A/en
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Publication of JP2555031Y2publicationCriticalpatent/JP2555031Y2/ja