FR34551E - - Google Patents

Info

Publication number
FR34551E
FR34551E FR34551DA FR34551E FR 34551 E FR34551 E FR 34551E FR 34551D A FR34551D A FR 34551DA FR 34551 E FR34551 E FR 34551E
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)
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.)
Publication date
Application granted granted Critical
Publication of FR34551E publication Critical patent/FR34551E/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR34551D 1927-05-02 Expired FR34551E (ko)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR644277T 1927-05-02

Publications (1)

Publication Number Publication Date
FR34551E true FR34551E (ko) 1929-09-16

Family

ID=9000055

Family Applications (2)

Application Number Title Priority Date Filing Date
FR34551D Expired FR34551E (ko) 1927-05-02
FR644277D Expired FR644277A (fr) 1927-05-02 1927-05-02 Perfectionnements aux reproducteurs de son

Family Applications After (1)

Application Number Title Priority Date Filing Date
FR644277D Expired FR644277A (fr) 1927-05-02 1927-05-02 Perfectionnements aux reproducteurs de son

Country Status (1)

Country Link
FR (2) FR644277A (ko)

Also Published As

Publication number Publication date
FR644277A (fr) 1928-10-05

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