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.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Publication date
Application grantedgrantedCritical
Publication of CA24978ApublicationCriticalpatent/CA24978A/fr
CA000024978ABarriere de passage a niveau ou signal de chemin de fer et appareil electrique pour le faire fonctionner automatiquement
ExpiredCA24978A
(fr)