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 JP2631772UpriorityCriticalpatent/JPS5322741Y2/ja
Priority to DE19722252456prioritypatent/DE2252456C3/de
Priority to NL7214660Aprioritypatent/NL167265C/xx
Publication of JPS48102539UpublicationCriticalpatent/JPS48102539U/ja
Priority to US54290175prioritypatent/USRE28611E/en
Application grantedgrantedCritical
Publication of JPS5322741Y2publicationCriticalpatent/JPS5322741Y2/ja