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Priority to JP5960188UpriorityCriticalpatent/JPH01162036U/ja
Priority to US07/341,148prioritypatent/US4907549A/en
Priority to GB8909727Aprioritypatent/GB2217783B/en
Priority to DE3914166Aprioritypatent/DE3914166A1/de
Publication of JPH01162036UpublicationCriticalpatent/JPH01162036U/ja