FR657125A - Improvements to sound reproducing and similar devices - Google Patents

Improvements to sound reproducing and similar devices

Info

Publication number
FR657125A
FR657125A FR657125DA FR657125A FR 657125 A FR657125 A FR 657125A FR 657125D A FR657125D A FR 657125DA FR 657125 A FR657125 A FR 657125A
Authority
FR
France
Prior art keywords
similar devices
sound reproducing
reproducing
sound
similar
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.)
COLUMBIA GRAPHOPHONE CO Ltd
Original Assignee
COLUMBIA GRAPHOPHONE CO 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 COLUMBIA GRAPHOPHONE CO Ltd filed Critical COLUMBIA GRAPHOPHONE CO Ltd
Application granted granted Critical
Publication of FR657125A publication Critical patent/FR657125A/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
    • H04R11/00—Transducers of moving-armature or moving-core type
    • H04R11/08—Gramophone pick-ups using a stylus; Recorders using a stylus

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR657125D 1927-07-11 1928-07-06 Improvements to sound reproducing and similar devices Expired FR657125A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB657125X 1927-07-11

Publications (1)

Publication Number Publication Date
FR657125A true FR657125A (en) 1929-05-17

Family

ID=10490606

Family Applications (1)

Application Number Title Priority Date Filing Date
FR657125D Expired FR657125A (en) 1927-07-11 1928-07-06 Improvements to sound reproducing and similar devices

Country Status (1)

Country Link
FR (1) FR657125A (en)

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