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Priority to JP12015685UpriorityCriticalpatent/JPH0247770Y2/ja
Priority to DE19863607240prioritypatent/DE3607240A1/de
Priority to US06/836,507prioritypatent/US4775042A/en
Publication of JPS6227230UpublicationCriticalpatent/JPS6227230U/ja
Application grantedgrantedCritical
Publication of JPH0247770Y2publicationCriticalpatent/JPH0247770Y2/ja