FR381960A - New powerful diaphragm for talking machines - Google Patents

New powerful diaphragm for talking machines

Info

Publication number
FR381960A
FR381960A FR381960DA FR381960A FR 381960 A FR381960 A FR 381960A FR 381960D A FR381960D A FR 381960DA FR 381960 A FR381960 A FR 381960A
Authority
FR
France
Prior art keywords
talking machines
new powerful
diaphragm
powerful diaphragm
new
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
Emile Rodolphe
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.)
EMILE RODOLPHE
Original Assignee
EMILE RODOLPHE
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 EMILE RODOLPHE filed Critical EMILE RODOLPHE
Application granted granted Critical
Publication of FR381960A publication Critical patent/FR381960A/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
    • H04R23/00—Transducers other than those covered by groups H04R9/00 - H04R21/00

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR381960D 1907-09-17 1907-09-17 New powerful diaphragm for talking machines Expired FR381960A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR381960T 1907-09-17

Publications (1)

Publication Number Publication Date
FR381960A true FR381960A (en) 1908-01-25

Family

ID=1428075

Family Applications (1)

Application Number Title Priority Date Filing Date
FR381960D Expired FR381960A (en) 1907-09-17 1907-09-17 New powerful diaphragm for talking machines

Country Status (1)

Country Link
FR (1) FR381960A (en)

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