FR554269A - Receiver device for telephone devices - Google Patents

Receiver device for telephone devices

Info

Publication number
FR554269A
FR554269A FR554269DA FR554269A FR 554269 A FR554269 A FR 554269A FR 554269D A FR554269D A FR 554269DA FR 554269 A FR554269 A FR 554269A
Authority
FR
France
Prior art keywords
receiver device
telephone devices
telephone
devices
receiver
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.)
Societe des Telephones Ericsson SA
Original Assignee
Societe des Telephones Ericsson 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 Societe des Telephones Ericsson SA filed Critical Societe des Telephones Ericsson SA
Application granted granted Critical
Publication of FR554269A publication Critical patent/FR554269A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R13/00—Transducers having an acoustic diaphragm of magnetisable material directly co-acting with electromagnet
    • H04R13/02—Telephone receivers

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR554269D 1921-11-30 1921-11-30 Receiver device for telephone devices Expired FR554269A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR554269T 1921-11-30

Publications (1)

Publication Number Publication Date
FR554269A true FR554269A (en) 1923-06-08

Family

ID=8938745

Family Applications (1)

Application Number Title Priority Date Filing Date
FR554269D Expired FR554269A (en) 1921-11-30 1921-11-30 Receiver device for telephone devices

Country Status (1)

Country Link
FR (1) FR554269A (en)

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