CH147847A - Electromagnetic sound reproducing device. - Google Patents

Electromagnetic sound reproducing device.

Info

Publication number
CH147847A
CH147847A CH147847DA CH147847A CH 147847 A CH147847 A CH 147847A CH 147847D A CH147847D A CH 147847DA CH 147847 A CH147847 A CH 147847A
Authority
CH
Switzerland
Prior art keywords
reproducing device
sound reproducing
electromagnetic sound
electromagnetic
sound
Prior art date
Application number
Other languages
French (fr)
Inventor
Lazare Colassi Waldemar
Original Assignee
Lazare Colassi Waldemar
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 Lazare Colassi Waldemar filed Critical Lazare Colassi Waldemar
Publication of CH147847A publication Critical patent/CH147847A/en

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
    • H04R11/00—Transducers of moving-armature or moving-core type

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
CH147847D 1929-10-23 1929-10-22 Electromagnetic sound reproducing device. CH147847A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR683779T 1929-10-23

Publications (1)

Publication Number Publication Date
CH147847A true CH147847A (en) 1931-06-30

Family

ID=9024077

Family Applications (1)

Application Number Title Priority Date Filing Date
CH147847D CH147847A (en) 1929-10-23 1929-10-22 Electromagnetic sound reproducing device.

Country Status (3)

Country Link
BE (1) BE364802A (en)
CH (1) CH147847A (en)
FR (1) FR683779A (en)

Also Published As

Publication number Publication date
BE364802A (en)
FR683779A (en) 1930-06-17

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