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Priority to JP7573787UpriorityCriticalpatent/JPS63184109U/ja
Priority to EP88107756Aprioritypatent/EP0291886B1/en
Priority to CA000566723Aprioritypatent/CA1296745C/en
Priority to DE19883875652prioritypatent/DE3875652T2/de
Priority to US07/193,823prioritypatent/US4903984A/en
Publication of JPS63184109UpublicationCriticalpatent/JPS63184109U/ja