FR452087A - Nouveau microphone indéréglable - Google Patents

Nouveau microphone indéréglable

Info

Publication number
FR452087A
FR452087A FR452087DA FR452087A FR 452087 A FR452087 A FR 452087A FR 452087D A FR452087D A FR 452087DA FR 452087 A FR452087 A FR 452087A
Authority
FR
France
Prior art keywords
foolproof
microphone
new
new foolproof
foolproof 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
English (en)
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.)
Compagnie Francaise Thomson Houston SA
Original Assignee
Compagnie Francaise Thomson Houston SA
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 Compagnie Francaise Thomson Houston SA filed Critical Compagnie Francaise Thomson Houston SA
Application granted granted Critical
Publication of FR452087A publication Critical patent/FR452087A/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
    • 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)
FR452087D 1912-02-27 1912-02-27 Nouveau microphone indéréglable Expired FR452087A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR452087T 1912-02-27

Publications (1)

Publication Number Publication Date
FR452087A true FR452087A (fr) 1913-05-06

Family

ID=1492348

Family Applications (1)

Application Number Title Priority Date Filing Date
FR452087D Expired FR452087A (fr) 1912-02-27 1912-02-27 Nouveau microphone indéréglable

Country Status (1)

Country Link
FR (1) FR452087A (fr)

Similar Documents

Publication Publication Date Title
FR452087A (fr) Nouveau microphone indéréglable
FR442449A (fr) Nouvel alambic
FR461614A (fr) Cannetière perfectionnée
FR455797A (fr) Nouveau microphone
CH63808A (de) Wickeleinrichtung
FR15409E (fr) Nouveau polyphone
FR449248A (fr) Bobinoir
FR450619A (fr) Bobinoir
CH63991A (fr) Echelle-double
CH57090A (fr) Chronograph-compteur
FI5002A (fi) Bränsleinmatningsapparat
CH60214A (it) Microfono
CH60402A (de) Mikrophon
FR456159A (fr) Cinématographe perfectionné
CH58916A (de) Räucherapparat
FR453771A (fr) Cinématographe
FR457935A (fr) Cinématographe
FR462867A (fr) Cinématographe
NL1576C (nl) Kinematograaf
CH62108A (de) Weife
FI4808A (fi) Skovelhjul
CH60399A (fr) Cure-Oreilles
CH60908A (fr) Hydro-aéroplane
CH59376A (fr) Recipiente imitazione legno
CH62681A (fr) Audiphone