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
CA820983A
Inventor
Valentin Georges
Kiehl Jean-Pierre
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.)
Societe Europeenne des Produits Refractaires SAS
Original Assignee
Societe Generale des Produits Refractaires
Publication date
Application grantedgrantedCritical
Publication of CA820983ApublicationCriticalpatent/CA820983A/en