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Priority to JP1987165631UpriorityCriticalpatent/JPH0723579Y2/ja
Priority to DE3808673Aprioritypatent/DE3808673A1/de
Publication of JPH0169182UpublicationCriticalpatent/JPH0169182U/ja
Priority to US07/692,952prioritypatent/US5197342A/en
Application grantedgrantedCritical
Publication of JPH0723579Y2publicationCriticalpatent/JPH0723579Y2/ja