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.)
Metallurgical Processes Ltd
National Smelting Co Ltd
Metallurgical Dev Co
Original Assignee
Metallurgical Processes Ltd
National Smelting Co Ltd
Metallurgical Dev 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 Metallurgical Processes Ltd, National Smelting Co Ltd, Metallurgical Dev CofiledCriticalMetallurgical Processes Ltd
Application grantedgrantedCritical
Publication of FR1176306ApublicationCriticalpatent/FR1176306A/en