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Priority to JP1989078407UpriorityCriticalpatent/JP2505006Y2/ja
Priority to US07/491,053prioritypatent/US5187607A/en
Priority to DE4007991Aprioritypatent/DE4007991A1/de
Publication of JPH0318515UpublicationCriticalpatent/JPH0318515U/ja
Application grantedgrantedCritical
Publication of JP2505006Y2publicationCriticalpatent/JP2505006Y2/ja