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Priority to JP1989061034UpriorityCriticalpatent/JP2522154Y2/ja
Priority to US07/417,077prioritypatent/US5019440A/en
Publication of JPH031035UpublicationCriticalpatent/JPH031035U/ja
Priority to US08/063,681prioritypatent/USRE34743E/en
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Publication of JP2522154Y2publicationCriticalpatent/JP2522154Y2/ja