FR1601818A - - Google Patents

Info

Publication number
FR1601818A
FR1601818A FR1601818DA FR1601818A FR 1601818 A FR1601818 A FR 1601818A FR 1601818D A FR1601818D A FR 1601818DA FR 1601818 A FR1601818 A FR 1601818A
Authority
FR
France
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
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 filed Critical
Application granted granted Critical
Publication of FR1601818A publication Critical patent/FR1601818A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/58—Anti-side-tone circuits
    • H04M1/585—Anti-side-tone circuits implemented without inductive element

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Amplifiers (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Networks Using Active Elements (AREA)
FR1601818D 1968-01-18 1968-12-30 Expired FR1601818A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE00061/68A SE334921B (fr) 1968-01-18 1968-01-18

Publications (1)

Publication Number Publication Date
FR1601818A true FR1601818A (fr) 1970-09-14

Family

ID=20256909

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1601818D Expired FR1601818A (fr) 1968-01-18 1968-12-30

Country Status (4)

Country Link
US (1) US3597550A (fr)
FR (1) FR1601818A (fr)
GB (1) GB1246381A (fr)
SE (1) SE334921B (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS495645B1 (fr) * 1970-02-07 1974-02-08
JPS5211166B1 (fr) * 1970-07-23 1977-03-29
JPS5148006B1 (fr) * 1970-09-03 1976-12-18

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE621155A (fr) * 1961-08-07
US3170043A (en) * 1961-09-29 1965-02-16 Bell Telephone Labor Inc Telephone anti-sidetone circuit
US3453394A (en) * 1965-12-01 1969-07-01 Bell Telephone Labor Inc Sidetone circuit for 4-wire secure telephone
US3453395A (en) * 1965-12-01 1969-07-01 Gen Electric Solid-state hybrid

Also Published As

Publication number Publication date
DE1815707B2 (de) 1977-02-10
SE334921B (fr) 1971-05-10
GB1246381A (en) 1971-09-15
DE1815707A1 (de) 1969-07-31
US3597550A (en) 1971-08-03

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Legal Events

Date Code Title Description
ST Notification of lapse