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Priority to JP1986122870UpriorityCriticalpatent/JPH0452843Y2/ja
Priority to US07/061,054prioritypatent/US4939602A/en
Priority to DE19873720192prioritypatent/DE3720192A1/de
Publication of JPS6329249UpublicationCriticalpatent/JPS6329249U/ja
Application grantedgrantedCritical
Publication of JPH0452843Y2publicationCriticalpatent/JPH0452843Y2/ja