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Priority to JP1990008900UpriorityCriticalpatent/JP2504105Y2/ja
Priority to GB9101186Aprioritypatent/GB2240605B/en
Priority to US07/648,988prioritypatent/US5116193A/en
Publication of JPH0399102UpublicationCriticalpatent/JPH0399102U/ja
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Publication of JP2504105Y2publicationCriticalpatent/JP2504105Y2/ja