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Priority to JP11668490UpriorityCriticalpatent/JP2506883Y2/ja
Priority to DE4136686Aprioritypatent/DE4136686C2/de
Priority to KR2019910018901Uprioritypatent/KR940005854Y1/ko
Publication of JPH0456923UpublicationCriticalpatent/JPH0456923U/ja
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Publication of JP2506883Y2publicationCriticalpatent/JP2506883Y2/ja