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Priority to JP4355976ApriorityCriticalpatent/JPS52127120A/ja
Priority to US05/787,843prioritypatent/US4176302A/en
Priority to CA276,342Aprioritypatent/CA1088666A/en
Priority to DE2717024Aprioritypatent/DE2717024C3/de
Publication of JPS52127120ApublicationCriticalpatent/JPS52127120A/ja
Publication of JPS563708B2publicationCriticalpatent/JPS563708B2/ja