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Priority to JP1977101510UpriorityCriticalpatent/JPS6134533Y2/ja
Priority to GB761580Aprioritypatent/GB1603916A/en
Priority to GB22616/78Aprioritypatent/GB1603915A/en
Priority to US05/912,553prioritypatent/US4239371A/en
Publication of JPS5429043UpublicationCriticalpatent/JPS5429043U/ja
Application grantedgrantedCritical
Publication of JPS6134533Y2publicationCriticalpatent/JPS6134533Y2/ja