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Priority to JP615885UpriorityCriticalpatent/JPH0244493Y2/ja
Priority to US06/774,738prioritypatent/US4642596A/en
Publication of JPS61123524UpublicationCriticalpatent/JPS61123524U/ja
Application grantedgrantedCritical
Publication of JPH0244493Y2publicationCriticalpatent/JPH0244493Y2/ja
