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Priority to JP4847981UpriorityCriticalpatent/JPH0119135Y2/ja
Priority to US06/363,733prioritypatent/US4447146A/en
Priority to DE19823212204prioritypatent/DE3212204A1/de
Publication of JPS57162640UpublicationCriticalpatent/JPS57162640U/ja
Application grantedgrantedCritical
Publication of JPH0119135Y2publicationCriticalpatent/JPH0119135Y2/ja