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.)
TOUBU TETSUDO KK
Toshiba Corp
Nippon Signal Co Ltd
Original Assignee
TOUBU TETSUDO KK
Toshiba Corp
Nippon Signal Co Ltd
Tokyo Shibaura Electric 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 TOUBU TETSUDO KK, Toshiba Corp, Nippon Signal Co Ltd, Tokyo Shibaura Electric Co LtdfiledCriticalTOUBU TETSUDO KK
Priority to JP17254979ApriorityCriticalpatent/JPS5694902A/ja
Publication of JPS5694902ApublicationCriticalpatent/JPS5694902A/ja