Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filedfiledCritical
Application grantedgrantedCritical
Publication of FR37657EpublicationCriticalpatent/FR37657E/fr
FR37657D1929-11-261929-11-26Acier spécial plus particulièrement destiné à la fabrication de pièces de voies ferrées, rails et autres objets analogues
ExpiredFR37657E
(fr)