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Priority to JP9221171ApriorityCriticalpatent/JPS5211872B2/ja
Priority to US00303049Aprioritypatent/US3821746A/en
Priority to IT31416/72Aprioritypatent/IT970309B/it
Priority to CA156,850Aprioritypatent/CA969631A/en
Publication of JPS4856359ApublicationCriticalpatent/JPS4856359A/ja
Publication of JPS5211872B2publicationCriticalpatent/JPS5211872B2/ja