FR493288A - Microphone - Google Patents

Microphone

Info

Publication number
FR493288A
FR493288A FR493288DA FR493288A FR 493288 A FR493288 A FR 493288A FR 493288D A FR493288D A FR 493288DA FR 493288 A FR493288 A FR 493288A
Authority
FR
France
Prior art keywords
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
Emile Chabeault
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of FR493288A publication Critical patent/FR493288A/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
    • H04R21/00—Variable-resistance transducers
    • H04R21/02—Microphones
    • H04R21/021—Microphones with granular resistance material

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR493288D 1916-02-05 1916-02-05 Microphone Expired FR493288A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR493288T 1916-02-05

Publications (1)

Publication Number Publication Date
FR493288A true FR493288A (en) 1919-08-05

Family

ID=1529050

Family Applications (1)

Application Number Title Priority Date Filing Date
FR493288D Expired FR493288A (en) 1916-02-05 1916-02-05 Microphone

Country Status (1)

Country Link
FR (1) FR493288A (en)

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