FR684131A - Improvements to the speakers - Google Patents

Improvements to the speakers

Info

Publication number
FR684131A
FR684131A FR684131DA FR684131A FR 684131 A FR684131 A FR 684131A FR 684131D A FR684131D A FR 684131DA FR 684131 A FR684131 A FR 684131A
Authority
FR
France
Prior art keywords
speakers
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)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ATELIERS DE MONTAGE ET D EBENI
Original Assignee
ATELIERS DE MONTAGE ET D EBENI
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 ATELIERS DE MONTAGE ET D EBENI filed Critical ATELIERS DE MONTAGE ET D EBENI
Application granted granted Critical
Publication of FR684131A publication Critical patent/FR684131A/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
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/12—Non-planar diaphragms or cones

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR684131D 1929-09-17 1929-09-17 Improvements to the speakers Expired FR684131A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR684131T 1929-09-17

Publications (1)

Publication Number Publication Date
FR684131A true FR684131A (en) 1930-06-21

Family

ID=9024292

Family Applications (1)

Application Number Title Priority Date Filing Date
FR684131D Expired FR684131A (en) 1929-09-17 1929-09-17 Improvements to the speakers

Country Status (1)

Country Link
FR (1) FR684131A (en)

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