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 JP203785UpriorityCriticalpatent/JPH0225936Y2/ja
Priority to US06/787,757prioritypatent/US4682676A/en
Publication of JPS61117931UpublicationCriticalpatent/JPS61117931U/ja
Application grantedgrantedCritical
Publication of JPH0225936Y2publicationCriticalpatent/JPH0225936Y2/ja