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Priority to JP11047690UpriorityCriticalpatent/JPH0469246U/ja
Priority to US07/774,983prioritypatent/US5369530A/en
Priority to EP91117931Aprioritypatent/EP0482558B1/en
Priority to DE69117130Tprioritypatent/DE69117130T2/de
Publication of JPH0469246UpublicationCriticalpatent/JPH0469246U/ja