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Priority to JP4886388UpriorityCriticalpatent/JPH01154973U/ja
Priority to US07/335,080prioritypatent/US4924910A/en
Priority to EP19890303555prioritypatent/EP0337723B1/en
Priority to DE8989303555Tprioritypatent/DE68903863T2/de
Priority to DE68903863Aprioritypatent/DE68903863T4/de
Publication of JPH01154973UpublicationCriticalpatent/JPH01154973U/ja