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Priority to FR69049583ApriorityCriticalpatent/FR1565469A/fr
Priority to CH74469Aprioritypatent/CH481626A/fr
Priority to BE727214Dprioritypatent/BE727214A/xx
Priority to DE19691903748prioritypatent/DE1903748A1/de
Priority to ES1969145487Uprioritypatent/ES145487Y/es
Application grantedgrantedCritical
Publication of FR1565469ApublicationCriticalpatent/FR1565469A/fr