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Priority to JP1990114715UpriorityCriticalpatent/JP2538834Y2/ja
Priority to US07/782,554prioritypatent/US5304785A/en
Priority to DE4135963Aprioritypatent/DE4135963C2/de
Publication of JPH0471118UpublicationCriticalpatent/JPH0471118U/ja
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Publication of JP2538834Y2publicationCriticalpatent/JP2538834Y2/ja