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.)
AT&T Corp
Original Assignee
Western Electric Co Inc
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 Western Electric Co IncfiledCriticalWestern Electric Co Inc
Publication of ES207104A1publicationCriticalpatent/ES207104A1/en
Multiple channel telephone system for carrier waves in which each terminal station comprises transmitter circuits with voice load circuits for transmitting signals in one direction and receiver circuits for signals in the opposite direction; characterized in that said transmission circuits comprise circuits of twin channels constituted by the upper and lower lateral bands respectively of a common carrier wave modulated by different vocal signals and the reception circuits include twin channel circuits provided with band filters to select each one of the twin pair channels. (Machine-translation by Google Translate, not legally binding)
ES0207104A1951-12-291952-12-24A multiple channel telephone system for protective waves (Machine-translation by Google Translate, not legally binding)
ExpiredES207104A1
(en)
A transmission system that comprises a transmitter and a receiver for the transmission of conversation signals (Machine-translation by Google Translate, not legally binding)
An installation to transmit service signals and telephone conversations in functions with two or more wagons. (Machine-translation by Google Translate, not legally binding)
System of transmission for internal and external traffic of data of a telecommunication system particularly telephone. (Machine-translation by Google Translate, not legally binding)
Radio communication installation between various mobile posts and/or between one or more mobile posts and one or more fixed posts. (Machine-translation by Google Translate, not legally binding)