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
CA867394A
Inventor
K. Sarkar Asim
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.)
Hickson and Welch Ltd
Original Assignee
Hickson and Welch Ltd
Publication date
Application grantedgrantedCritical
Publication of CA867394ApublicationCriticalpatent/CA867394A/en