FR746534A - Improvements to devices intended for the recording or reproduction of sound - Google Patents

Improvements to devices intended for the recording or reproduction of sound

Info

Publication number
FR746534A
FR746534A FR746534DA FR746534A FR 746534 A FR746534 A FR 746534A FR 746534D A FR746534D A FR 746534DA FR 746534 A FR746534 A FR 746534A
Authority
FR
France
Prior art keywords
reproduction
sound
recording
devices intended
intended
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.)
Electrical Research Products Inc
Original Assignee
Electrical Research Products Inc
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 Electrical Research Products Inc filed Critical Electrical Research Products Inc
Application granted granted Critical
Publication of FR746534A publication Critical patent/FR746534A/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)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
  • Moving Of Heads (AREA)
FR746534D 1931-12-17 1932-11-29 Improvements to devices intended for the recording or reproduction of sound Expired FR746534A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US581561A US1962304A (en) 1931-12-17 1931-12-17 Electromagnetic translating device

Publications (1)

Publication Number Publication Date
FR746534A true FR746534A (en) 1933-05-30

Family

ID=24325668

Family Applications (1)

Application Number Title Priority Date Filing Date
FR746534D Expired FR746534A (en) 1931-12-17 1932-11-29 Improvements to devices intended for the recording or reproduction of sound

Country Status (4)

Country Link
US (1) US1962304A (en)
DE (1) DE620359C (en)
FR (1) FR746534A (en)
GB (1) GB409343A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010023354B4 (en) * 2010-06-10 2023-05-25 Jenoptik Industrial Metrology Germany Gmbh Probe arm for a surface measuring device

Also Published As

Publication number Publication date
GB409343A (en) 1934-04-30
US1962304A (en) 1934-06-12
DE620359C (en) 1935-10-19

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