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The Compagnie française de matériel de chemin de fer (CFMCF) was a French manufacturer of rail equipment, with headquarters in Ivry-sur-Seine and a factory in Maubeuge.
Founded in 1872, utilising the works of the Société Charles Bonnefond et Cie in Ivry-sur-Seine.
1911 Acquired the Tilleul works ("le Bois du Tilleul" founded in 1844.
1919 CFMCF along with five others: the Forges et aciéries de la Marine et Homécourt, the Chemins de fer de Paris à Lyon et à la Méditerranée (PLM), Compagnie du chemin de fer de Paris à Orléans, établissements Schneider, and the Société des forges de Châtillon-Commentry-Neuves-Maison founded a new company: the Compagnie générale de construction et d'entretien du matériel de chemin de fer (CGCEM); the new company's business was the repair and maintenance of railway vehicles, and had works in Nevers and Villefranche-sur-Saône serving the PLM, and at Saint-Pierre-des-Corps serving the Paris à Orléans Railway.
The above information is condensed from the Wikipedia entry.