FR579550A - Telephone receiver - Google Patents

Telephone receiver

Info

Publication number
FR579550A
FR579550A FR579550DA FR579550A FR 579550 A FR579550 A FR 579550A FR 579550D A FR579550D A FR 579550DA FR 579550 A FR579550 A FR 579550A
Authority
FR
France
Prior art keywords
telephone receiver
telephone
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)
Inventor
Jules Damelet
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 FR579550A publication Critical patent/FR579550A/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)
FR579550D 1923-06-28 1923-06-28 Telephone receiver Expired FR579550A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR579550T 1923-06-28

Publications (1)

Publication Number Publication Date
FR579550A true FR579550A (en) 1924-10-18

Family

ID=8956205

Family Applications (1)

Application Number Title Priority Date Filing Date
FR579550D Expired FR579550A (en) 1923-06-28 1923-06-28 Telephone receiver

Country Status (1)

Country Link
FR (1) FR579550A (en)

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