FR1072710A - Improvements to sound reproducing reader devices - Google Patents

Improvements to sound reproducing reader devices

Info

Publication number
FR1072710A
FR1072710A FR1072710DA FR1072710A FR 1072710 A FR1072710 A FR 1072710A FR 1072710D A FR1072710D A FR 1072710DA FR 1072710 A FR1072710 A FR 1072710A
Authority
FR
France
Prior art keywords
sound reproducing
reader devices
reader
devices
reproducing
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)
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.)
Birmingham Sound Reproducers Ltd
Original Assignee
Birmingham Sound Reproducers Ltd
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 Birmingham Sound Reproducers Ltd filed Critical Birmingham Sound Reproducers Ltd
Application granted granted Critical
Publication of FR1072710A publication Critical patent/FR1072710A/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
    • H04R17/00—Piezoelectric transducers; Electrostrictive transducers
    • H04R17/04—Gramophone pick-ups using a stylus; Recorders using a stylus

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR1072710D 1952-01-22 1953-01-21 Improvements to sound reproducing reader devices Expired FR1072710A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1072710X 1952-01-22

Publications (1)

Publication Number Publication Date
FR1072710A true FR1072710A (en) 1954-09-15

Family

ID=10872013

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1072710D Expired FR1072710A (en) 1952-01-22 1953-01-21 Improvements to sound reproducing reader devices

Country Status (1)

Country Link
FR (1) FR1072710A (en)

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