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
CA606818A
Inventor
H. Mack Arthur
A. Buell Milton
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.)
ROSCO METAL AND ROOFING PRODUCTS Ltd
Original Assignee
ROSCO METAL AND ROOFING PRODUCTS Ltd
Publication date
Application grantedgrantedCritical
Publication of CA606818ApublicationCriticalpatent/CA606818A/en