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.)
CHEMINS DE FER FRANAAIS SOC NA
Le Materiel Electrique SW SA
Original Assignee
CHEMINS DE FER FRANAAIS SOC NA
Le Materiel Electrique SW SA
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 CHEMINS DE FER FRANAAIS SOC NA, Le Materiel Electrique SW SAfiledCriticalCHEMINS DE FER FRANAAIS SOC NA
Priority to ES0308961ApriorityCriticalpatent/ES308961A3/es
Publication of ES308961A3publicationCriticalpatent/ES308961A3/es
Verfahren und Vorrichtung zur koordinierten Steuerung mehrerer Verkehrslichtsignalanlagen durch tonfrequente Impulse, die dem Starkstromnetz überlagert werden