FR853572A - Telecommunication system - Google Patents

Telecommunication system

Info

Publication number
FR853572A
FR853572A FR853572DA FR853572A FR 853572 A FR853572 A FR 853572A FR 853572D A FR853572D A FR 853572DA FR 853572 A FR853572 A FR 853572A
Authority
FR
France
Prior art keywords
telecommunication system
telecommunication
Prior art date
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.)
Expired
Application number
Other languages
French (fr)
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.)
Lignes Telegraphiques et Telephoniques LTT SA
Original Assignee
Lignes Telegraphiques et Telephoniques LTT 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 Lignes Telegraphiques et Telephoniques LTT SA filed Critical Lignes Telegraphiques et Telephoniques LTT SA
Application granted granted Critical
Publication of FR853572A publication Critical patent/FR853572A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B3/00Line transmission systems
    • H04B3/02Details
    • H04B3/20Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
FR853572D 1938-04-28 1939-04-27 Telecommunication system Expired FR853572A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US527936XA 1938-04-28 1938-04-28

Publications (1)

Publication Number Publication Date
FR853572A true FR853572A (en) 1940-03-22

Family

ID=21979924

Family Applications (1)

Application Number Title Priority Date Filing Date
FR853572D Expired FR853572A (en) 1938-04-28 1939-04-27 Telecommunication system

Country Status (2)

Country Link
FR (1) FR853572A (en)
GB (1) GB527936A (en)

Also Published As

Publication number Publication date
GB527936A (en) 1940-10-18

Similar Documents

Publication Publication Date Title
FR853355A (en) Multiple phone system
CH235154A (en) Telecommunication system.
FR51256E (en) Advanced indicator system
FR856152A (en) Telephone system
FR858001A (en) Electrical communication system
FR866030A (en) Electromechanical system
FR951376A (en) Telephone system
FR853308A (en) Multiple phone system
FR1031552A (en) Telephony system
FR937957A (en) Radio-printer system
FR848805A (en) Telecommunications systems
CH237887A (en) Telecommunications installation.
CH239303A (en) Telecommunication system.
FR837587A (en) Secret telecommunications system
FR853572A (en) Telecommunication system
FR856889A (en) Telecommunication system
FR865888A (en) Multiple telegraph system
FR854971A (en) Telecommunication cables
FR841892A (en) Tele-printing system
FR856415A (en) Automatic telephone system
FR869078A (en) Telephone system
FR856679A (en) Electrical communications system
FR858980A (en) Rigid insulator system
FR863476A (en) Multiple phone system
FR863644A (en) Fusion system