FR550708A - écouteur téléphonique plus spécialement destiné aux aviateurs pour la réception des signaux de t.s.f. - Google Patents

écouteur téléphonique plus spécialement destiné aux aviateurs pour la réception des signaux de t.s.f.

Info

Publication number
FR550708A
FR550708A FR550708DA FR550708A FR 550708 A FR550708 A FR 550708A FR 550708D A FR550708D A FR 550708DA FR 550708 A FR550708 A FR 550708A
Authority
FR
France
Prior art keywords
aviators
reception
specially intended
telephone earpiece
earpiece
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)
Inventor
Eugene-Louis Gueneau
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 FR550708A publication Critical patent/FR550708A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R5/00—Stereophonic arrangements
    • H04R5/033—Headphones for stereophonic communication
    • H04R5/0335—Earpiece support, e.g. headbands or neckrests

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR550708D 1922-04-27 1922-04-27 écouteur téléphonique plus spécialement destiné aux aviateurs pour la réception des signaux de t.s.f. Expired FR550708A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR550708T 1922-04-27

Publications (1)

Publication Number Publication Date
FR550708A true FR550708A (fr) 1923-03-16

Family

ID=8936385

Family Applications (1)

Application Number Title Priority Date Filing Date
FR550708D Expired FR550708A (fr) 1922-04-27 1922-04-27 écouteur téléphonique plus spécialement destiné aux aviateurs pour la réception des signaux de t.s.f.

Country Status (1)

Country Link
FR (1) FR550708A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5164987A (en) * 1991-10-17 1992-11-17 Raven Jay R Personal stereo speaker assembly

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5164987A (en) * 1991-10-17 1992-11-17 Raven Jay R Personal stereo speaker assembly

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