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
CA736468A
Inventor
David J. Marshall
Original Assignee
Ayerst Mckenna and Harrison Inc
Publication date
Application grantedgrantedCritical
Publication of CA736468ApublicationCriticalpatent/CA736468A/en