FR511491A - Téléphone électro-statique - Google Patents

Téléphone électro-statique

Info

Publication number
FR511491A
FR511491A FR511491A FR511491DA FR511491A FR 511491 A FR511491 A FR 511491A FR 511491 A FR511491 A FR 511491A FR 511491D A FR511491D A FR 511491DA FR 511491 A FR511491 A FR 511491A
Authority
FR
France
Prior art keywords
electro
static telephone
telephone
static
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
FR511491A
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 FR511491A publication Critical patent/FR511491A/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
    • H04R19/00—Electrostatic transducers
    • H04R19/04—Microphones

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR511491A 1914-07-15 1920-03-12 Téléphone électro-statique Expired FR511491A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US511491XA 1914-07-15 1914-07-15

Publications (1)

Publication Number Publication Date
FR511491A true FR511491A (fr) 1920-12-27

Family

ID=21969638

Family Applications (1)

Application Number Title Priority Date Filing Date
FR511491A Expired FR511491A (fr) 1914-07-15 1920-03-12 Téléphone électro-statique

Country Status (1)

Country Link
FR (1) FR511491A (fr)

Similar Documents

Publication Publication Date Title
FR511491A (fr) Téléphone électro-statique
FR469617A (fr) Engrais-amendement
FR469427A (fr) Engrais-amendement
FR21099E (fr) Entailleuse-perceuse
FR468496A (fr) Stylographe
FR469685A (fr) Engrais-amendement
CH68373A (fr) Rosette-décoration
CH71947A (fr) Chronographe-compteur
FR478162A (fr) Microphone
CH74491A (de) Fernsprechanlage
FI5709A (fi) Plastiskt sprängämne jämte sätt att framställa detsamma
FI5811A (fi) Sätt att framställa sulfitcellulosa
FR467783A (fr) Déchaumeuse
FR469661A (fr) Engrais-amendement
FR469722A (fr) Engrais-amendement
FR468495A (fr) Trieur-secoueur
FI5756A (fi) Ångpanna
FI5846A (fi) Bombkoppling
FI5705A (fi) Cylindrisk borste
FI5712A (fi) Tegelpress
FI5731A (fi) Reformgolv
FI5735A (fi) Stubb-brytare
FI5737A (fi) Motordressin
FI5743A (fi) Svängningsrelä
FI5668A (fi) Självhållande paketbärare