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Priority to JP1977063242UpriorityCriticalpatent/JPS5729381Y2/ja
Priority to GB2010778Aprioritypatent/GB1603545A/en
Priority to US05/907,403prioritypatent/US4262547A/en
Priority to NL7805396Aprioritypatent/NL7805396A/xx
Priority to DE19782821931prioritypatent/DE2821931A1/de
Publication of JPS53159206UpublicationCriticalpatent/JPS53159206U/ja
Application grantedgrantedCritical
Publication of JPS5729381Y2publicationCriticalpatent/JPS5729381Y2/ja