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.)
Filing date
Publication date
Application filedfiledCritical
Priority to JP1978115570UpriorityCriticalpatent/JPS5531291U/ja
Priority to US06/066,579prioritypatent/US4256935A/en
Publication of JPS5531291UpublicationCriticalpatent/JPS5531291U/ja