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 JP1987111611UpriorityCriticalpatent/JPH0528095Y2/ja
Priority to US07/221,797prioritypatent/US4871994A/en
Publication of JPS6416476UpublicationCriticalpatent/JPS6416476U/ja
Application grantedgrantedCritical
Publication of JPH0528095Y2publicationCriticalpatent/JPH0528095Y2/ja
