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Priority to JP15308788UpriorityCriticalpatent/JPH0275253U/ja
Priority to US07/305,086prioritypatent/US4966393A/en
Priority to EP89101804Aprioritypatent/EP0327968B1/en
Priority to DE89101804Tprioritypatent/DE68908199T2/de
Publication of JPH0275253UpublicationCriticalpatent/JPH0275253U/ja