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Priority to JP1989048118UpriorityCriticalpatent/JP2513116Y2/ja
Priority to US07/448,730prioritypatent/US5021833A/en
Priority to EP89312955Aprioritypatent/EP0373874B1/en
Priority to DE68915970Tprioritypatent/DE68915970T2/de
Publication of JPH02138740UpublicationCriticalpatent/JPH02138740U/ja
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Publication of JP2513116Y2publicationCriticalpatent/JP2513116Y2/ja