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Priority to JP3423677UpriorityCriticalpatent/JPS53129344U/ja
Priority to DE19782811661prioritypatent/DE2811661A1/de
Priority to DK122978Aprioritypatent/DK122978A/da
Priority to GB1071378Aprioritypatent/GB1601763A/en
Publication of JPS53129344UpublicationCriticalpatent/JPS53129344U/ja