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
CA683719A
Inventor
Thorley Brian
F. Friauf George
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.)
Cabot Corp
Original Assignee
Cabot Corp
Publication date
Application grantedgrantedCritical
Publication of CA683719ApublicationCriticalpatent/CA683719A/en