FR544081A - Téléphone électrostatique - Google Patents

Téléphone électrostatique

Info

Publication number
FR544081A
FR544081A FR544081DA FR544081A FR 544081 A FR544081 A FR 544081A FR 544081D A FR544081D A FR 544081DA FR 544081 A FR544081 A FR 544081A
Authority
FR
France
Prior art keywords
electrostatic telephone
electrostatic
telephone
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
Joseph Massolle
Hans Vogt
Josef Engl
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 filed Critical
Application granted granted Critical
Publication of FR544081A publication Critical patent/FR544081A/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
    • H04R19/00—Electrostatic transducers

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
  • Telephone Set Structure (AREA)
FR544081D 1920-12-04 1921-12-01 Téléphone électrostatique Expired FR544081A (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEV16079D DE368287C (de) 1920-12-04 1920-12-04 Anordnung fuer elektrostatische Telephone
GB31395/21A GB189982A (en) 1920-12-04 1921-11-23 Improvements in or relating to electrostatic telephones

Publications (1)

Publication Number Publication Date
FR544081A true FR544081A (fr) 1922-09-14

Family

ID=26001343

Family Applications (1)

Application Number Title Priority Date Filing Date
FR544081D Expired FR544081A (fr) 1920-12-04 1921-12-01 Téléphone électrostatique

Country Status (3)

Country Link
DE (1) DE368287C (fr)
FR (1) FR544081A (fr)
GB (1) GB189982A (fr)

Also Published As

Publication number Publication date
GB189982A (en) 1922-12-14
DE368287C (de) 1923-02-03

Similar Documents

Publication Publication Date Title
FR553457A (fr) Téléphone
FR544081A (fr) Téléphone électrostatique
FR552515A (fr) Téléphones-jouets
FR512356A (fr) écrin
FR516631A (fr) Répertoire téléphonique
FR547478A (fr) Micro-téléphone combiné
FR528513A (fr) Matériel téléphonique
FR513237A (fr) Téléphone imprimeur
FI8180A (fi) Rullager
FI8199A (fi) Förgreningsklämma
FI8080A (fi) Timmerstaplingsapparat
FI8101A (fi) Vattenturbin-löphjul
FI8076A (fi) Hörapparat
FI8108A (fi) Väljningsinrättning
FI8111A (fi) Timmervältare
FI8073A (fi) Sågfilningsmaskin
FI8122A (fi) Ringur
FI8081A (fi) Elektrisk strömbegränsare
FI8127A (fi) Spärrmatninganordning
FI8129A (fi) Undervattensmina
FI8132A (fi) Minsvepningsapparat
FI8166A (fi) Slåtter- coh skördemaskin
FI8170A (fi) Vattentrycktändare
FI8171A (fi) Vattenbomb
FI7891A (fi) Lagerskål