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
CA672945A
Inventor
Barassi Carlo
Cappa Giulio
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.)
Pirelli and C SpA
Original Assignee
Pirelli SpA
Publication date
Application grantedgrantedCritical
Publication of CA672945ApublicationCriticalpatent/CA672945A/en