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Priority to JP1988156177UpriorityCriticalpatent/JPH0443175Y2/ja
Priority to EP89308346Aprioritypatent/EP0356141A1/en
Publication of JPH0275036UpublicationCriticalpatent/JPH0275036U/ja
Priority to US07/608,817prioritypatent/US5018505A/en
Priority to US07/608,730prioritypatent/US5012795A/en
Application grantedgrantedCritical
Publication of JPH0443175Y2publicationCriticalpatent/JPH0443175Y2/ja