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Priority claimed from JP5770871Aexternal-prioritypatent/JPS5029478B1/ja
Priority claimed from JP8298871Aexternal-prioritypatent/JPS4848488A/ja
Priority claimed from JP8486071Aexternal-prioritypatent/JPS4849783A/ja
Priority claimed from JP8664271Aexternal-prioritypatent/JPS4852787A/ja
Priority claimed from JP711072Aexternal-prioritypatent/JPS4876887A/ja
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Publication of NL7210442ApublicationCriticalpatent/NL7210442A/xx