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
CA763182A
Inventor
Auville Calvin
Gross Johann
Original Assignee
Celanese Corp
Publication date
Application grantedgrantedCritical
Publication of CA763182ApublicationCriticalpatent/CA763182A/en