FR697226A - Electromagnetic or electro-acoustic device - Google Patents

Electromagnetic or electro-acoustic device

Info

Publication number
FR697226A
FR697226A FR697226DA FR697226A FR 697226 A FR697226 A FR 697226A FR 697226D A FR697226D A FR 697226DA FR 697226 A FR697226 A FR 697226A
Authority
FR
France
Prior art keywords
electro
electromagnetic
acoustic device
acoustic
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
Robest Pollak-Rudin
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 FR697226A publication Critical patent/FR697226A/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
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Optical Recording Or Reproduction (AREA)
FR697226D 1929-06-12 1930-06-11 Electromagnetic or electro-acoustic device Expired FR697226A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT363326X 1929-06-12

Publications (1)

Publication Number Publication Date
FR697226A true FR697226A (en) 1931-01-13

Family

ID=3672807

Family Applications (1)

Application Number Title Priority Date Filing Date
FR697226D Expired FR697226A (en) 1929-06-12 1930-06-11 Electromagnetic or electro-acoustic device

Country Status (2)

Country Link
FR (1) FR697226A (en)
GB (1) GB363326A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3234339A (en) * 1962-04-18 1966-02-08 Heppner Mfg Co Speaker
GB2149272B (en) * 1983-10-26 1987-06-17 Adam Kovacs Electromechanical transducer

Also Published As

Publication number Publication date
GB363326A (en) 1931-12-11

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