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Priority to JP1988028392UpriorityCriticalpatent/JP2501853Y2/ja
Priority to US07/245,149prioritypatent/US4966500A/en
Priority to DE3831535Aprioritypatent/DE3831535A1/de
Publication of JPH01114220UpublicationCriticalpatent/JPH01114220U/ja
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Publication of JP2501853Y2publicationCriticalpatent/JP2501853Y2/ja