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
CA856806A
Inventor
Shen Tsung-Ying
Original Assignee
Merck and Co Inc
Publication date
Application grantedgrantedCritical
Publication of CA856806ApublicationCriticalpatent/CA856806A/en