FR382731A - Perfectionnements aux machines parlantes - Google Patents

Perfectionnements aux machines parlantes

Info

Publication number
FR382731A
FR382731A FR382731DA FR382731A FR 382731 A FR382731 A FR 382731A FR 382731D A FR382731D A FR 382731DA FR 382731 A FR382731 A FR 382731A
Authority
FR
France
Prior art keywords
talking machines
talking
machines
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
English (en)
Inventor
Joseph-Margulies Landon
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.)
JOSEPH-MARGULIES LANDON
Original Assignee
JOSEPH-MARGULIES LANDON
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 JOSEPH-MARGULIES LANDON filed Critical JOSEPH-MARGULIES LANDON
Application granted granted Critical
Publication of FR382731A publication Critical patent/FR382731A/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
    • H04R7/04—Plane diaphragms

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR382731D 1906-10-11 1907-10-10 Perfectionnements aux machines parlantes Expired FR382731A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB382731X 1906-10-11

Publications (1)

Publication Number Publication Date
FR382731A true FR382731A (fr) 1908-02-14

Family

ID=1428788

Family Applications (1)

Application Number Title Priority Date Filing Date
FR382731D Expired FR382731A (fr) 1906-10-11 1907-10-10 Perfectionnements aux machines parlantes

Country Status (1)

Country Link
FR (1) FR382731A (fr)

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