FR1125692A - Perfectionnement aux récepteurs téléphoniques d'abonnés - Google Patents

Perfectionnement aux récepteurs téléphoniques d'abonnés

Info

Publication number
FR1125692A
FR1125692A FR1125692DA FR1125692A FR 1125692 A FR1125692 A FR 1125692A FR 1125692D A FR1125692D A FR 1125692DA FR 1125692 A FR1125692 A FR 1125692A
Authority
FR
France
Prior art keywords
development
subscriber telephone
telephone receivers
receivers
subscriber
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
English (en)
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.)
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 Inc filed Critical Western Electric Co Inc
Application granted granted Critical
Publication of FR1125692A publication Critical patent/FR1125692A/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
    • H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
    • H04M1/6008—Substation equipment, e.g. for use by subscribers including speech amplifiers in the transmitter circuit
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Amplifiers (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Near-Field Transmission Systems (AREA)
FR1125692D 1954-10-08 1955-06-02 Perfectionnement aux récepteurs téléphoniques d'abonnés Expired FR1125692A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US461145A US2808462A (en) 1954-10-08 1954-10-08 Subscriber telephone set

Publications (1)

Publication Number Publication Date
FR1125692A true FR1125692A (fr) 1956-11-05

Family

ID=23831397

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1125692D Expired FR1125692A (fr) 1954-10-08 1955-06-02 Perfectionnement aux récepteurs téléphoniques d'abonnés

Country Status (5)

Country Link
US (1) US2808462A (enEXAMPLES)
BE (1) BE541698A (enEXAMPLES)
DE (1) DE1096423B (enEXAMPLES)
FR (1) FR1125692A (enEXAMPLES)
GB (1) GB773850A (enEXAMPLES)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3020351A (en) * 1957-03-20 1962-02-06 Gen Dynamics Corp Directional coupling network
US3492439A (en) * 1965-11-10 1970-01-27 Amtron Telephone signalling circuit

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB679875A (en) * 1949-03-16 1952-09-24 Siemens Ag Improvements in or relating to an arrangement for telephone subscribers sets
DE862917C (de) * 1951-07-12 1953-01-15 Siemens Ag Fernsprechstation mit Kohlemikrofon und Speisung vom Amt

Also Published As

Publication number Publication date
BE541698A (enEXAMPLES)
DE1096423B (de) 1961-01-05
US2808462A (en) 1957-10-01
GB773850A (en) 1957-05-01

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