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Priority to JP10972177UpriorityCriticalpatent/JPS6246640Y2/ja
Priority to SE7710149Aprioritypatent/SE430584B/xx
Priority to GB3868677Aprioritypatent/GB1569661A/en
Priority to DE19772742360prioritypatent/DE2742360C3/de
Publication of JPS5436298UpublicationCriticalpatent/JPS5436298U/ja
Application grantedgrantedCritical
Publication of JPS6246640Y2publicationCriticalpatent/JPS6246640Y2/ja