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
CA878204A
Inventor
James Hiram
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.)
Drawn and Rolled Sections Ltd
Original Assignee
Drawn and Rolled Sections Ltd
Publication date
Application grantedgrantedCritical
Publication of CA878204ApublicationCriticalpatent/CA878204A/en