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Priority to JP7748485UpriorityCriticalpatent/JPS6235041Y2/ja
Priority to US06/865,833prioritypatent/US4775233A/en
Priority to CA000509733Aprioritypatent/CA1273816A/en
Priority to CN86103565.8Aprioritypatent/CN1005363B/zh
Publication of JPS61193405UpublicationCriticalpatent/JPS61193405U/ja
Application grantedgrantedCritical
Publication of JPS6235041Y2publicationCriticalpatent/JPS6235041Y2/ja