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Priority to JP1990115214UpriorityCriticalpatent/JP2561085Y2/ja
Priority to US07/732,395prioritypatent/US5243480A/en
Publication of JPH0472851UpublicationCriticalpatent/JPH0472851U/ja
Priority to US08/002,731prioritypatent/US5396385A/en
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Publication of JP2561085Y2publicationCriticalpatent/JP2561085Y2/ja