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Priority to JP14857487UpriorityCriticalpatent/JPH0541884Y2/ja
Priority to DE88115910Tprioritypatent/DE3879346T2/de
Priority to EP88115910Aprioritypatent/EP0310002B1/en
Publication of JPS6452754UpublicationCriticalpatent/JPS6452754U/ja
Priority to US07/464,603prioritypatent/US5071266A/en
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Publication of JPH0541884Y2publicationCriticalpatent/JPH0541884Y2/ja