FR498686A - Diaphragm for phonographs - Google Patents

Diaphragm for phonographs

Info

Publication number
FR498686A
FR498686A FR498686DA FR498686A FR 498686 A FR498686 A FR 498686A FR 498686D A FR498686D A FR 498686DA FR 498686 A FR498686 A FR 498686A
Authority
FR
France
Prior art keywords
phonographs
diaphragm
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
Frederick George Pugh
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of FR498686A publication Critical patent/FR498686A/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
    • H04R7/02—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)
FR498686D 1918-02-01 1919-04-26 Diaphragm for phonographs Expired FR498686A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB498686X 1918-02-01

Publications (1)

Publication Number Publication Date
FR498686A true FR498686A (en) 1920-01-20

Family

ID=1533858

Family Applications (1)

Application Number Title Priority Date Filing Date
FR498686D Expired FR498686A (en) 1918-02-01 1919-04-26 Diaphragm for phonographs

Country Status (1)

Country Link
FR (1) FR498686A (en)

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