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.)
Shell Sekiyu KK
Original Assignee
Shell Sekiyu KK
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 Shell Sekiyu KKfiledCriticalShell Sekiyu KK
Priority to JP49075405ApriorityCriticalpatent/JPS515540A/ja
Publication of JPS515540ApublicationCriticalpatent/JPS515540A/ja