FR742617A - - Google Patents

Info

Publication number
FR742617A
FR742617A FR742617DA FR742617A FR 742617 A FR742617 A FR 742617A FR 742617D A FR742617D A FR 742617DA FR 742617 A FR742617 A FR 742617A
Authority
FR
France
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)
Publication date
Application granted granted Critical
Publication of FR742617A publication Critical patent/FR742617A/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
    • H04R7/16—Mounting or tensioning of diaphragms or cones
    • H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR742617D Expired FR742617A (cg-RX-API-DMAC10.html)

Publications (1)

Publication Number Publication Date
FR742617A true FR742617A (cg-RX-API-DMAC10.html) 1933-03-10

Family

ID=1547006

Family Applications (1)

Application Number Title Priority Date Filing Date
FR742617D Expired FR742617A (cg-RX-API-DMAC10.html)

Country Status (1)

Country Link
FR (1) FR742617A (cg-RX-API-DMAC10.html)

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