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Priority to JP1989095534UpriorityCriticalpatent/JPH0640208Y2/ja
Priority to US07/512,962prioritypatent/US5207547A/en
Priority to IT47879Aprioritypatent/IT1240447B/it
Priority to DE4013066Aprioritypatent/DE4013066C2/de
Publication of JPH0335970UpublicationCriticalpatent/JPH0335970U/ja
Application grantedgrantedCritical
Publication of JPH0640208Y2publicationCriticalpatent/JPH0640208Y2/ja
