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Priority to JP1990051765UpriorityCriticalpatent/JP2502531Y2/ja
Priority to US07/549,993prioritypatent/US5081564A/en
Priority to DE4021987Aprioritypatent/DE4021987A1/de
Publication of JPH0410906UpublicationCriticalpatent/JPH0410906U/ja
Application grantedgrantedCritical
Publication of JP2502531Y2publicationCriticalpatent/JP2502531Y2/ja
