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Application filedfiledCritical
Priority to JP2448681UpriorityCriticalpatent/JPS5836615Y2/ja
Priority to US06/348,671prioritypatent/US4438701A/en
Priority to GB8204945Aprioritypatent/GB2093420B/en
Publication of JPS57138814UpublicationCriticalpatent/JPS57138814U/ja
Application grantedgrantedCritical
Publication of JPS5836615Y2publicationCriticalpatent/JPS5836615Y2/ja