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.)
NIPPON TOUKETSU KANSOU KENKIYU
Original Assignee
NIPPON TOUKETSU KANSOU KENKIYU
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 NIPPON TOUKETSU KANSOU KENKIYUfiledCriticalNIPPON TOUKETSU KANSOU KENKIYU
Priority to JP5185776ApriorityCriticalpatent/JPS52136915A/en
Publication of JPS52136915ApublicationCriticalpatent/JPS52136915A/en
Publication of JPS5520543B2publicationCriticalpatent/JPS5520543B2/ja