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 Telegraph and Telephone Corp
Hakusan Seisakusho Co Ltd
Original Assignee
Nippon Telegraph and Telephone Corp
Hakusan Seisakusho 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 Nippon Telegraph and Telephone Corp, Hakusan Seisakusho Co LtdfiledCriticalNippon Telegraph and Telephone Corp
Priority to JP4968689UpriorityCriticalpatent/JPH0729706Y2/ja
Publication of JPH02142940UpublicationCriticalpatent/JPH02142940U/ja
Application grantedgrantedCritical
Publication of JPH0729706Y2publicationCriticalpatent/JPH0729706Y2/ja