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FR12695E - Microphone - Google Patents

Microphone

Info

Publication number
FR12695E
FR12695E FR12695A FR12695DA FR12695E FR 12695 E FR12695 E FR 12695E FR 12695 A FR12695 A FR 12695A FR 12695D A FR12695D A FR 12695DA FR 12695 E FR12695 E FR 12695E
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
FR12695A
Other languages
French (fr)
Inventor
Fernand Bourdil
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
Publication date
Application granted granted Critical
Publication of FR12695E publication Critical patent/FR12695E/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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR12695A Microphone Expired FR12695E (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR12695T

Publications (1)

Publication Number Publication Date
FR12695E true FR12695E (en) 1910-10-26

Family

ID=8641221

Family Applications (2)

Application Number Title Priority Date Filing Date
FR12695A Expired FR12695E (en) Microphone
FR416171A Expired FR416171A (en) 1909-07-31 Microphone

Family Applications After (1)

Application Number Title Priority Date Filing Date
FR416171A Expired FR416171A (en) 1909-07-31 Microphone

Country Status (1)

Country Link
FR (2) FR416171A (en)

Also Published As

Publication number Publication date
FR416171A (en) 1910-10-13

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