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.)
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 filedfiledCritical
Application grantedgrantedCritical
Publication of FR837756ApublicationCriticalpatent/FR837756A/fr
Variable-Direction Aerials And Aerial Arrays
(AREA)
FR837756D1937-05-111938-05-09Procédé et installation de télégraphie et de téléphonie multiplex, en particulier pour ondes très courtes
ExpiredFR837756A
(fr)