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 JP17142575UpriorityCriticalpatent/JPS5638665Y2/ja
Priority to US05/751,361prioritypatent/US4275279A/en
Priority to CA268,051Aprioritypatent/CA1065375A/en
Publication of JPS5282878UpublicationCriticalpatent/JPS5282878U/ja
Application grantedgrantedCritical
Publication of JPS5638665Y2publicationCriticalpatent/JPS5638665Y2/ja