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 JP1987121344UpriorityCriticalpatent/JPH064261Y2/ja
Priority to US07/139,802prioritypatent/US4850222A/en
Publication of JPS6427613UpublicationCriticalpatent/JPS6427613U/ja
Application grantedgrantedCritical
Publication of JPH064261Y2publicationCriticalpatent/JPH064261Y2/ja