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Application filedfiledCritical
Priority to JP6299785UpriorityCriticalpatent/JPH0344230Y2/ja
Priority to US06/800,766prioritypatent/US4673371A/en
Priority to GB8600220Aprioritypatent/GB2174011B/en
Publication of JPS61180093UpublicationCriticalpatent/JPS61180093U/ja
Application grantedgrantedCritical
Publication of JPH0344230Y2publicationCriticalpatent/JPH0344230Y2/ja
