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
CA806204A
Inventor
Donati Ivo
Fidecicchi Mario
Muench Werner
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.)
SNIA Viscosa SpA
Original Assignee
SNIA Viscosa SpA
Publication date
Application grantedgrantedCritical
Publication of CA806204ApublicationCriticalpatent/CA806204A/en