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Application filedfiledCritical
Priority to ES1978236696UpriorityCriticalpatent/ES236696Y/es
Publication of ES236696UpublicationCriticalpatent/ES236696U/es
Application grantedgrantedCritical
Publication of ES236696YpublicationCriticalpatent/ES236696Y/es
Priority to IT67892/79Aprioritypatent/IT1118975B/it
Priority to JP5687879Aprioritypatent/JPS552480A/ja