FR579308A - Adjustable telephone and radiotelephone receiver - Google Patents

Adjustable telephone and radiotelephone receiver

Info

Publication number
FR579308A
FR579308A FR579308DA FR579308A FR 579308 A FR579308 A FR 579308A FR 579308D A FR579308D A FR 579308DA FR 579308 A FR579308 A FR 579308A
Authority
FR
France
Prior art keywords
radiotelephone receiver
adjustable telephone
telephone
adjustable
radiotelephone
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.)
D INSTR DE PREC ET DYNAMO PHAR
Original Assignee
D INSTR DE PREC ET DYNAMO PHAR
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 D INSTR DE PREC ET DYNAMO PHAR filed Critical D INSTR DE PREC ET DYNAMO PHAR
Application granted granted Critical
Publication of FR579308A publication Critical patent/FR579308A/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)
FR579308D 1923-06-13 1923-06-13 Adjustable telephone and radiotelephone receiver Expired FR579308A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR579308T 1923-06-13

Publications (1)

Publication Number Publication Date
FR579308A true FR579308A (en) 1924-10-14

Family

ID=8956009

Family Applications (1)

Application Number Title Priority Date Filing Date
FR579308D Expired FR579308A (en) 1923-06-13 1923-06-13 Adjustable telephone and radiotelephone receiver

Country Status (1)

Country Link
FR (1) FR579308A (en)

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