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.)
Harbison Walker Refractories Co
Original Assignee
Harbison Walker Refractories 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 Harbison Walker Refractories CofiledCriticalHarbison Walker Refractories Co
Priority to FR901864ApriorityCriticalpatent/FR1333248A/fr
Application grantedgrantedCritical
Publication of FR1333248ApublicationCriticalpatent/FR1333248A/fr