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FR1026069A - Microphone device - Google Patents

Microphone device

Info

Publication number
FR1026069A
FR1026069A FR1026069DA FR1026069A FR 1026069 A FR1026069 A FR 1026069A FR 1026069D A FR1026069D A FR 1026069DA FR 1026069 A FR1026069 A FR 1026069A
Authority
FR
France
Prior art keywords
microphone device
microphone
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
Maurice Bonnaffous
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.)
APP ET D EXPL DES ETABLISSEMEN
Original Assignee
APP ET D EXPL DES ETABLISSEMEN
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 APP ET D EXPL DES ETABLISSEMEN filed Critical APP ET D EXPL DES ETABLISSEMEN
Application granted granted Critical
Publication of FR1026069A publication Critical patent/FR1026069A/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
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/08—Mouthpieces; Microphones; Attachments therefor
    • H04R1/083—Special constructions of mouthpieces

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR1026069D 1950-10-17 1950-10-17 Microphone device Expired FR1026069A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1026069T 1950-10-17

Publications (1)

Publication Number Publication Date
FR1026069A true FR1026069A (en) 1953-04-23

Family

ID=9579872

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1026069D Expired FR1026069A (en) 1950-10-17 1950-10-17 Microphone device

Country Status (1)

Country Link
FR (1) FR1026069A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2830135A (en) * 1953-12-21 1958-04-08 Horace L Webb Dictation type mask with valve controlled inhalation and exhalation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2830135A (en) * 1953-12-21 1958-04-08 Horace L Webb Dictation type mask with valve controlled inhalation and exhalation

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