FR866096A - Circuits for telephone sets - Google Patents

Circuits for telephone sets

Info

Publication number
FR866096A
FR866096A FR866096DA FR866096A FR 866096 A FR866096 A FR 866096A FR 866096D A FR866096D A FR 866096DA FR 866096 A FR866096 A FR 866096A
Authority
FR
France
Prior art keywords
circuits
telephone sets
telephone
sets
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.)
Thales SA
Original Assignee
Le Materiel Telephonique Thomson CSF
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 US278411A external-priority patent/US2287998A/en
Application filed by Le Materiel Telephonique Thomson CSF filed Critical Le Materiel Telephonique Thomson CSF
Application granted granted Critical
Publication of FR866096A publication Critical patent/FR866096A/en
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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
FR866096D 1939-06-10 1940-06-08 Circuits for telephone sets Expired FR866096A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US278411A US2287998A (en) 1939-06-10 1939-06-10 Telephone circuit
US434372A US2332643A (en) 1939-06-10 1942-03-12 Telephone set circuit

Publications (1)

Publication Number Publication Date
FR866096A true FR866096A (en) 1941-06-16

Family

ID=26959081

Family Applications (1)

Application Number Title Priority Date Filing Date
FR866096D Expired FR866096A (en) 1939-06-10 1940-06-08 Circuits for telephone sets

Country Status (5)

Country Link
US (1) US2332643A (en)
BE (1) BE439637A (en)
CH (1) CH222392A (en)
FR (1) FR866096A (en)
GB (2) GB544364A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2559778A (en) * 1948-04-02 1951-07-10 Modern Telephone Corp Intercommunication telephone system
DE886766C (en) * 1951-03-03 1953-08-17 Normalzeit G M B H Device to prevent unauthorized eavesdropping on telephone conversations
US2764731A (en) * 1953-05-06 1956-09-25 Bell Telephone Labor Inc Thermistor network
DE1016760B (en) * 1953-07-07 1957-10-03 Deutsche Bundespost Circuit arrangement for volume control in telephone subscriber connection lines
NL100978C (en) * 1956-03-29
US3143700A (en) * 1960-08-12 1964-08-04 Computing Devices Canada Resistance networks for stabilizing phase shift in resolvers and the like

Also Published As

Publication number Publication date
GB542643A (en) 1942-01-21
BE439637A (en)
CH222392A (en) 1942-07-15
US2332643A (en) 1943-10-26
GB544364A (en) 1942-04-09

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