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Priority to JP6664671UpriorityCriticalpatent/JPS4823326U/ja
Priority to GB1325772Aprioritypatent/GB1384766A/en
Priority to DE2213971Aprioritypatent/DE2213971C3/de
Priority to FR7210055Aprioritypatent/FR2131538A5/fr
Priority to NL727203886Aprioritypatent/NL150900B/xx
Publication of JPS4823326UpublicationCriticalpatent/JPS4823326U/ja