FR34078E - Perfectionnements apportés aux machines parlantes - Google Patents

Perfectionnements apportés aux machines parlantes

Info

Publication number
FR34078E
FR34078E FR34078DA FR34078E FR 34078 E FR34078 E FR 34078E FR 34078D A FR34078D A FR 34078DA FR 34078 E FR34078 E FR 34078E
Authority
FR
France
Prior art keywords
talking machines
talking
machines
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
Andre Enckell
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 FR34078E publication Critical patent/FR34078E/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
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/04—Plane diaphragms

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR34078D 1927-05-18 1927-05-18 Perfectionnements apportés aux machines parlantes Expired FR34078E (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR34078T 1927-05-18

Publications (1)

Publication Number Publication Date
FR34078E true FR34078E (fr) 1929-05-01

Family

ID=8671681

Family Applications (1)

Application Number Title Priority Date Filing Date
FR34078D Expired FR34078E (fr) 1927-05-18 1927-05-18 Perfectionnements apportés aux machines parlantes

Country Status (1)

Country Link
FR (1) FR34078E (fr)

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