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.)
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.)
REPUBLIC CARBON Co
Unifrax 1 LLC
Original Assignee
REPUBLIC CARBON Co
Carborundum Co
Publication date
Application grantedgrantedCritical
Publication of CA321922ApublicationCriticalpatent/CA321922A/en