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
CA789364A
Inventor
Hagwood John
Armstrong Edward
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.)
Darchem Engineering Ltd
Original Assignee
Darchem Engineering Ltd
Publication date
Application grantedgrantedCritical
Publication of CA789364ApublicationCriticalpatent/CA789364A/en