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Priority to JP1907488UpriorityCriticalpatent/JPH01123966U/ja
Priority to US07/287,456prioritypatent/US4952002A/en
Priority to DE3844246Aprioritypatent/DE3844246C2/de
Priority to GB8830342Aprioritypatent/GB2213222B/en
Publication of JPH01123966UpublicationCriticalpatent/JPH01123966U/ja