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Priority to JP8094971UpriorityCriticalpatent/JPS5129074Y2/ja
Priority to IT25798/72Aprioritypatent/IT959828B/it
Priority to US05/264,287prioritypatent/US3987558A/en
Publication of JPS4838952UpublicationCriticalpatent/JPS4838952U/ja
Application grantedgrantedCritical
Publication of JPS5129074Y2publicationCriticalpatent/JPS5129074Y2/ja