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
CA800216A
Inventor
C. Bayes Ronald
H. Sands David
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.)
Chemidus Plastics Ltd
Ruberoid Co Ltd
Original Assignee
Chemidus Plastics Ltd
Ruberoid Co Ltd
Publication date
Application grantedgrantedCritical
Publication of CA800216ApublicationCriticalpatent/CA800216A/en