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
CA648792A
Inventor
W. Sinclair Frederick
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.)
Gloucester Railway Carriage and Wagon Co Ltd
Metalastik Ltd
Original Assignee
Gloucester Railway Carriage and Wagon Co Ltd
Metalastik Ltd
Publication date
Application grantedgrantedCritical
Publication of CA648792ApublicationCriticalpatent/CA648792A/en