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Priority claimed from FR816617Aexternal-prioritypatent/FR1255416A/fr
Priority claimed from FR845657Aexternal-prioritypatent/FR1281428A/fr
Application filed by Alfred Louis Guidoni, Pierre Fournier, Pierre Charles Maurice MaruccofiledCriticalAlfred Louis Guidoni
Publication of BE599421ApublicationCriticalpatent/BE599421A/fr