FR862412A - Phono-electric cell - Google Patents

Phono-electric cell

Info

Publication number
FR862412A
FR862412A FR862412DA FR862412A FR 862412 A FR862412 A FR 862412A FR 862412D A FR862412D A FR 862412DA FR 862412 A FR862412 A FR 862412A
Authority
FR
France
Prior art keywords
phono
electric cell
cell
electric
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
French (fr)
Inventor
Raymond Paul Joseph Pestel
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 FR862412A publication Critical patent/FR862412A/en
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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR862412D 1938-12-19 1939-12-19 Phono-electric cell Expired FR862412A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TN862412X 1938-12-19

Publications (1)

Publication Number Publication Date
FR862412A true FR862412A (en) 1941-03-06

Family

ID=21618138

Family Applications (1)

Application Number Title Priority Date Filing Date
FR862412D Expired FR862412A (en) 1938-12-19 1939-12-19 Phono-electric cell

Country Status (1)

Country Link
FR (1) FR862412A (en)

Similar Documents

Publication Publication Date Title
FR839929A (en) Stylograph
FR845280A (en) Water-closet-shower
FR862412A (en) Phono-electric cell
FR847765A (en) Piezoelectric cell
FR858191A (en) Photoelectric cell
FR49532E (en) Thoracoscope
FR835597A (en) Aero-heater
FR836649A (en) Screen-washer
FR839100A (en) Cannetière
FI20997A (en) Självbrännande electrodes
FR834472A (en) Inverter-reducer
FR842531A (en) Rodoir
FR843406A (en) Gasifier-purifier
FR841305A (en) Fabric-fur
FI19249A (en) Snöplogvinge
FI23292A (en) Växelströmsignalmottagningsanordning
FI19465A (en) Träfiberplatta
ES144035A1 (en) HELIOGRAPH FILTERLIGHT
ES144804A1 (en) AERO-SIGNALER
FI19169A (en) Krage
FI19434A (en) Värmeutbytesanordning
FI19185A (en) Limämne
FI19771A (en) Luftskumsläckare
FI19241A (en) Suksiside
FI19742A (en) Degkavlingsmaskin