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Priority to JP1988042737UpriorityCriticalpatent/JPH01145767U/ja
Priority to DE3827794Aprioritypatent/DE3827794A1/de
Priority to KR2019880017288Uprioritypatent/KR930002385Y1/ko
Publication of JPH01145767UpublicationCriticalpatent/JPH01145767U/ja
Priority to US07/552,834prioritypatent/US5085097A/en