FR600019A - - Google Patents

Info

Publication number
FR600019A
FR600019A FR600019DA FR600019A FR 600019 A FR600019 A FR 600019A FR 600019D A FR600019D A FR 600019DA FR 600019 A FR600019 A FR 600019A
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 FR600019A publication Critical patent/FR600019A/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; 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
    • H04R7/14—Non-planar diaphragms or cones corrugated, pleated or ribbed

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR600019D Expired FR600019A (enrdf_load_stackoverflow)

Publications (1)

Publication Number Publication Date
FR600019A true FR600019A (enrdf_load_stackoverflow) 1926-01-28

Family

ID=1540386

Family Applications (1)

Application Number Title Priority Date Filing Date
FR600019D Expired FR600019A (enrdf_load_stackoverflow)

Country Status (1)

Country Link
FR (1) FR600019A (enrdf_load_stackoverflow)

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