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
CA834335A
Inventor
F. Smith James
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.)
Stackpole Carbon Co
Original Assignee
Stackpole Carbon Co
Publication date
Application grantedgrantedCritical
Publication of CA834335ApublicationCriticalpatent/CA834335A/en