FR999887A - Improvements to devices such as telephone receivers - Google Patents

Improvements to devices such as telephone receivers

Info

Publication number
FR999887A
FR999887A FR999887DA FR999887A FR 999887 A FR999887 A FR 999887A FR 999887D A FR999887D A FR 999887DA FR 999887 A FR999887 A FR 999887A
Authority
FR
France
Prior art keywords
devices
telephone receivers
receivers
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
French (fr)
Inventor
Edmond-Alexandre Calembert
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 FR999887A publication Critical patent/FR999887A/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
    • H04R7/16—Mounting or tensioning of diaphragms or cones
    • H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery
    • H04R7/22—Clamping rim of diaphragm or cone against seating

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR999887D 1946-01-24 1946-01-24 Improvements to devices such as telephone receivers Expired FR999887A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR999887T 1946-01-24

Publications (1)

Publication Number Publication Date
FR999887A true FR999887A (en) 1952-02-05

Family

ID=9560002

Family Applications (1)

Application Number Title Priority Date Filing Date
FR999887D Expired FR999887A (en) 1946-01-24 1946-01-24 Improvements to devices such as telephone receivers

Country Status (1)

Country Link
FR (1) FR999887A (en)

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