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Priority to JP1986137945UpriorityCriticalpatent/JPH054253Y2/ja
Priority to US07/079,690prioritypatent/US4792780A/en
Priority to DE19873730439prioritypatent/DE3730439A1/de
Publication of JPS6344403UpublicationCriticalpatent/JPS6344403U/ja
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Publication of JPH054253Y2publicationCriticalpatent/JPH054253Y2/ja