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Application filedfiledCritical
Priority to JP1980097936UpriorityCriticalpatent/JPH0215162Y2/ja
Priority to US06/275,713prioritypatent/US4493988A/en
Priority to GB8120483Aprioritypatent/GB2079459B/en
Priority to DE3127141Aprioritypatent/DE3127141C2/de
Priority to FR8113717Aprioritypatent/FR2486647A1/fr
Publication of JPS5720611UpublicationCriticalpatent/JPS5720611U/ja
Application grantedgrantedCritical
Publication of JPH0215162Y2publicationCriticalpatent/JPH0215162Y2/ja