Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Priority to JP4943974ApriorityCriticalpatent/JPS5421809B2/ja
Publication of JPS50141514ApublicationCriticalpatent/JPS50141514A/ja
Publication of JPS5421809B2publicationCriticalpatent/JPS5421809B2/ja
Priority to US06/159,695prioritypatent/US4340424A/en
