FR419817A - Membrane acoustique - Google Patents

Membrane acoustique

Info

Publication number
FR419817A
FR419817A FR419817DA FR419817A FR 419817 A FR419817 A FR 419817A FR 419817D A FR419817D A FR 419817DA FR 419817 A FR419817 A FR 419817A
Authority
FR
France
Prior art keywords
acoustic membrane
acoustic
membrane
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)
Inventor
Louis Lumiere
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 FR419817A publication Critical patent/FR419817A/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
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR419817D 1909-11-04 1909-11-04 Membrane acoustique Expired FR419817A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR419817T 1909-11-04

Publications (1)

Publication Number Publication Date
FR419817A true FR419817A (fr) 1911-01-16

Family

ID=1463010

Family Applications (1)

Application Number Title Priority Date Filing Date
FR419817D Expired FR419817A (fr) 1909-11-04 1909-11-04 Membrane acoustique

Country Status (1)

Country Link
FR (1) FR419817A (fr)

Similar Documents

Publication Publication Date Title
FR416171A (fr) Microphone
CH48526A (de) Mikrotelephon
FI3865A (fi) Gramofooni- äänikalvon parannus
ES45575A1 (es) Mejoras en instrumentos acústicos.
FR403982A (fr) Cornet acoustique
FR403666A (fr) Jouet électro-acoustique
FR407721A (fr) Saccharomètre anéroÏde
FI3629A (fi) Hästrävsa
FI3592A (fi) Impregnerade tandborstar
FI3612A (fi) Enspårig kälke
FI3778A (fi) Värmeugn
FI3621A (fi) Bränslebesparande kakelugn
FI3638A (fi) Förbättradt hovbeslag
FI3759A (fi) Barkningsmaskin
FI3712A (fi) Elektrisk masugn
FI3722A (fi) Vägnings- och mätningsapparat
FI3589A (fi) Inställbar gardinkäpp- och karnishållare
FI3660A (fi) Timmersax
FI3639A (fi) Föränderlig sängbotten
FI3743A (fi) Kolsyremaskin
CH47373A (de) Eisennbahnschwelle
FI3669A (fi) Fyrtakts-förbrännings- eller explosionsmotor
FI3652A (fi) Säckhållare
FI3631A (fi) Sugmjölkningsanordning
FI3704A (fi) Spjäll-ventil