FR614471A - Amplifier coupling for telephone systems - Google Patents

Amplifier coupling for telephone systems

Info

Publication number
FR614471A
FR614471A FR614471DA FR614471A FR 614471 A FR614471 A FR 614471A FR 614471D A FR614471D A FR 614471DA FR 614471 A FR614471 A FR 614471A
Authority
FR
France
Prior art keywords
telephone systems
amplifier coupling
amplifier
coupling
telephone
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.)
Siemens and Halske AG
Siemens AG
Original Assignee
Siemens and Halske AG
Siemens AG
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
Priority claimed from DES72338D external-priority patent/DE466684C/en
Application filed by Siemens and Halske AG, Siemens AG filed Critical Siemens and Halske AG
Application granted granted Critical
Publication of FR614471A publication Critical patent/FR614471A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/20—Reducing 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)
  • Amplifiers (AREA)
FR614471D 1925-04-25 1926-04-13 Amplifier coupling for telephone systems Expired FR614471A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE614471X 1925-04-25
DE614471X 1925-10-08
DES72338D DE466684C (en) 1924-12-24 1925-11-23 Arrangement for regulating the switching times with echo or feedback suppressors working with controlled grid potential shift

Publications (1)

Publication Number Publication Date
FR614471A true FR614471A (en) 1926-12-15

Family

ID=28045827

Family Applications (1)

Application Number Title Priority Date Filing Date
FR614471D Expired FR614471A (en) 1925-04-25 1926-04-13 Amplifier coupling for telephone systems

Country Status (3)

Country Link
BE (1) BE333727A (en)
FR (1) FR614471A (en)
NL (1) NL18177C (en)

Also Published As

Publication number Publication date
BE333727A (en) 1926-05-31
NL18177C (en) 1928-06-15

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