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.)
Gunma Prefecture
Original Assignee
Gunma Prefecture
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 Gunma PrefecturefiledCriticalGunma Prefecture
Priority to JP50032949ApriorityCriticalpatent/JPS51107977A/ja
Publication of JPS51107977ApublicationCriticalpatent/JPS51107977A/ja