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 ES200324A1publicationCriticalpatent/ES200324A1/en
Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo
(AREA)
Abstract
Telephone system comprising a substation provided with a transmission circuit and another reception circuit and a telephone line connected to the substation characterized by a transmission equalizer comprising a resistance element sensitive to current connected in derivation with the line at the input of said substation and through which a part of the direct current passes. (Machine-translation by Google Translate, not legally binding)
ES0200324A1950-12-271951-10-26Telephone system (Machine-translation by Google Translate, not legally binding)
ExpiredES200324A1
(en)
A system to provide the switches and the like with conditions of exclusivity in their use (Machine-translation by Google Translate, not legally binding)