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.)
Unifrax 1 LLC
Original Assignee
Carborundum Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Carborundum CofiledCriticalCarborundum Co
Priority to FR895421ApriorityCriticalpatent/FR1320531A/en
Application grantedgrantedCritical
Publication of FR1320531ApublicationCriticalpatent/FR1320531A/en