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.)
Sumitomo Osaka Cement Co Ltd
Original Assignee
Osaka Cement Co Ltd
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 Osaka Cement Co LtdfiledCriticalOsaka Cement Co Ltd
Priority to FR7211522ApriorityCriticalpatent/FR2178428A5/fr
Application grantedgrantedCritical
Publication of FR2178428A5publicationCriticalpatent/FR2178428A5/fr
