FR740730A - Microphone électronique - Google Patents

Microphone électronique

Info

Publication number
FR740730A
FR740730A FR740730DA FR740730A FR 740730 A FR740730 A FR 740730A FR 740730D A FR740730D A FR 740730DA FR 740730 A FR740730 A FR 740730A
Authority
FR
France
Prior art keywords
electronic microphone
microphone
electronic
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.)
ARNAUD GOURRINAT ETS
Original Assignee
ARNAUD GOURRINAT ETS
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 ARNAUD GOURRINAT ETS filed Critical ARNAUD GOURRINAT ETS
Application granted granted Critical
Publication of FR740730A publication Critical patent/FR740730A/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; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R23/00—Transducers other than those covered by groups H04R9/00 - H04R21/00
    • H04R23/004—Transducers other than those covered by groups H04R9/00 - H04R21/00 using ionised gas

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR740730D 1931-10-29 1931-10-29 Microphone électronique Expired FR740730A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR740730T 1931-10-29

Publications (1)

Publication Number Publication Date
FR740730A true FR740730A (fr) 1933-01-31

Family

ID=9135790

Family Applications (1)

Application Number Title Priority Date Filing Date
FR740730D Expired FR740730A (fr) 1931-10-29 1931-10-29 Microphone électronique

Country Status (1)

Country Link
FR (1) FR740730A (fr)

Similar Documents

Publication Publication Date Title
FR719430A (fr) Haut-parleur
FR749076A (fr) Microphone
FR740730A (fr) Microphone électronique
FR736576A (fr) Haut-parleurs
FR731860A (fr) Haut-parleur perfectionné
FR723583A (fr) Sarcleuse-bêcheuse
FR740070A (fr) Bouterolle
FR720943A (fr) Synchronoscope sonore
FR723893A (fr) Haut-parleur
DK46771C (da) Mikrofon.
FR718882A (fr) étui
ES121911A1 (es) TELÉFONO ELECTROSTáTICO
FR727623A (fr) Annonciateur
FR728168A (fr) Amplificateur téléphonique
FR712734A (fr) Bretelles
FR730399A (fr) Pendule
FI13410A (fi) Sätt att framställa kromjärnsvamp
FI13917A (fi) Sätt att framställa poröst byggnads- och isoleringsmaterial
FI13698A (fi) Sätt att framställa azofärgämnen
FI13690A (fi) Sätt att laka råfosfat
DK46526C (da) Højttaler.
DK46792C (da) Højttaler.
FR40046E (fr) Microphone électrostatique
FI13563A (fi) Sätt att framställa i vatten olösliga azofärgämnen
FR41642E (fr) Horloge parlante