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Application filed by Traction Et D Electricite Soc, Charbonnages Andre Dumont En F, Cockerill Ougree, Charbonnages De Helchteren, Charbonnages De Houthalen, Unie Der Kempische ElectrischefiledCriticalTraction Et D Electricite Soc
Priority to BE604337ApriorityCriticalpatent/BE604337A/fr
Publication of BE604337ApublicationCriticalpatent/BE604337A/fr