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Priority to JP1985089088UpriorityCriticalpatent/JPH0248261Y2/ja
Priority to DE19853539520prioritypatent/DE3539520C2/de
Priority to GB08527430Aprioritypatent/GB2173396B/en
Publication of JPS61203840UpublicationCriticalpatent/JPS61203840U/ja
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Publication of JPH0248261Y2publicationCriticalpatent/JPH0248261Y2/ja