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
CA794836A
Inventor
Islam Rafiqul
G. Garnish Sidney
Figov Murray
Mustacchi Henry
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.)
GAF (GREAT BRITAIN) Ltd
Original Assignee
GAF (GREAT BRITAIN) Ltd
Publication date
Application grantedgrantedCritical
Publication of CA794836ApublicationCriticalpatent/CA794836A/en