FR383195A - Diaphragme téléphonique perfectionné - Google Patents

Diaphragme téléphonique perfectionné

Info

Publication number
FR383195A
FR383195A FR383195DA FR383195A FR 383195 A FR383195 A FR 383195A FR 383195D A FR383195D A FR 383195DA FR 383195 A FR383195 A FR 383195A
Authority
FR
France
Prior art keywords
advanced telephone
telephone diaphragm
diaphragm
advanced
telephone
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
Panait F. Pavlu
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.)
PANAIT F PAVLU
Original Assignee
PANAIT F PAVLU
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 PANAIT F PAVLU filed Critical PANAIT F PAVLU
Application granted granted Critical
Publication of FR383195A publication Critical patent/FR383195A/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
    • H04R7/06—Plane diaphragms comprising a plurality of sections or layers
    • H04R7/10—Plane diaphragms comprising a plurality of sections or layers comprising superposed layers in contact

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR383195D 1907-10-22 1907-10-22 Diaphragme téléphonique perfectionné Expired FR383195A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR383195T 1907-10-22

Publications (1)

Publication Number Publication Date
FR383195A true FR383195A (fr) 1908-02-26

Family

ID=1429221

Family Applications (1)

Application Number Title Priority Date Filing Date
FR383195D Expired FR383195A (fr) 1907-10-22 1907-10-22 Diaphragme téléphonique perfectionné

Country Status (1)

Country Link
FR (1) FR383195A (fr)

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