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.)
OI SEISAKUSHO CO., LTD.
Original Assignee
OI 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 OI SEISAKUSHO CO., LTD.filedCriticalOI SEISAKUSHO CO., LTD.
Priority to JP1991008411UpriorityCriticalpatent/JPH0712156Y2/ja
Publication of JPH0498626UpublicationCriticalpatent/JPH0498626U/ja
Application grantedgrantedCritical
Publication of JPH0712156Y2publicationCriticalpatent/JPH0712156Y2/ja