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.)
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.)
Heavy Oil Producers Service
Original Assignee
Heavy Oil Producers Service
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Heavy Oil Producers ServicefiledCriticalHeavy Oil Producers Service
Priority to CA175,366ApriorityCriticalpatent/CA977698A/en
Application grantedgrantedCritical
Publication of CA977698ApublicationCriticalpatent/CA977698A/en