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.)
Expired
Application number
Inventor
De Grandpre Etienne
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.)
POUR L'UNION DES TRANSPORTS FERROVIAIRES ET ROUTIERS Ste
Original Assignee
POUR L'UNION DES TRANSPORTS FERROVIAIRES ET ROUTIERS Ste
Publication date
Application grantedgrantedCritical
Publication of CA631638ApublicationCriticalpatent/CA631638A/en