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
CA669833A
Inventor
H. Ottenheym Johannes
Pesch Willem
Verstrijden Ulrich
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.)
Stamicarbon BV
Original Assignee
Stamicarbon BV
Publication date
Application grantedgrantedCritical
Publication of CA669833ApublicationCriticalpatent/CA669833A/en