FR342330A - Sound reproducer or intensifier applicable to phonographs, gramophones, telephones and other similar apparatus - Google Patents

Sound reproducer or intensifier applicable to phonographs, gramophones, telephones and other similar apparatus

Info

Publication number
FR342330A
FR342330A FR342330DA FR342330A FR 342330 A FR342330 A FR 342330A FR 342330D A FR342330D A FR 342330DA FR 342330 A FR342330 A FR 342330A
Authority
FR
France
Prior art keywords
gramophones
phonographs
intensifier
telephones
applicable
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
Charles Algernon Parsons
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 FR342330A publication Critical patent/FR342330A/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)
FR342330D 1903-05-08 1904-04-06 Sound reproducer or intensifier applicable to phonographs, gramophones, telephones and other similar apparatus Expired FR342330A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB342330X 1903-05-08

Publications (1)

Publication Number Publication Date
FR342330A true FR342330A (en) 1904-09-05

Family

ID=1391343

Family Applications (1)

Application Number Title Priority Date Filing Date
FR342330D Expired FR342330A (en) 1903-05-08 1904-04-06 Sound reproducer or intensifier applicable to phonographs, gramophones, telephones and other similar apparatus

Country Status (1)

Country Link
FR (1) FR342330A (en)

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