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 JP428881UpriorityCriticalpatent/JPH034973Y2/ja
Priority to US06/315,519prioritypatent/US4510543A/en
Priority to GB8132417Aprioritypatent/GB2086642B/en
Priority to DE19813143198prioritypatent/DE3143198A1/de
Publication of JPS57118537UpublicationCriticalpatent/JPS57118537U/ja
Application grantedgrantedCritical
Publication of JPH034973Y2publicationCriticalpatent/JPH034973Y2/ja
