FR665126A - Improvements to electrically controlled vibrators such as those used in sound recording and reproducing devices - Google Patents

Improvements to electrically controlled vibrators such as those used in sound recording and reproducing devices

Info

Publication number
FR665126A
FR665126A FR665126DA FR665126A FR 665126 A FR665126 A FR 665126A FR 665126D A FR665126D A FR 665126DA FR 665126 A FR665126 A FR 665126A
Authority
FR
France
Prior art keywords
those used
electrically controlled
sound recording
reproducing devices
controlled vibrators
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.)
WIRELESS MUSIC Ltd
Original Assignee
WIRELESS MUSIC 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 WIRELESS MUSIC Ltd filed Critical WIRELESS MUSIC Ltd
Application granted granted Critical
Publication of FR665126A publication Critical patent/FR665126A/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

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Dc Machiner (AREA)
FR665126D 1927-04-01 1928-12-05 Improvements to electrically controlled vibrators such as those used in sound recording and reproducing devices Expired FR665126A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1786583X 1927-04-01

Publications (1)

Publication Number Publication Date
FR665126A true FR665126A (en) 1929-09-14

Family

ID=10890620

Family Applications (2)

Application Number Title Priority Date Filing Date
FR652167D Expired FR652167A (en) 1927-04-01 1928-02-22 Further training in electrically controlled vibrators such as sound transmission, reproduction and recording devices
FR665126D Expired FR665126A (en) 1927-04-01 1928-12-05 Improvements to electrically controlled vibrators such as those used in sound recording and reproducing devices

Family Applications Before (1)

Application Number Title Priority Date Filing Date
FR652167D Expired FR652167A (en) 1927-04-01 1928-02-22 Further training in electrically controlled vibrators such as sound transmission, reproduction and recording devices

Country Status (6)

Country Link
US (2) US1786583A (en)
BE (2) BE349486A (en)
DE (1) DE578221C (en)
FR (2) FR652167A (en)
GB (2) GB293131A (en)
NL (1) NL24821C (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2963073B1 (en) 2010-07-22 2012-08-03 Peugeot Citroen Automobiles Sa METHOD FOR REDUCING THE FUEL CONSUMPTION OF A HEAT ENGINE EQUIPPED WITH A VEHICLE AND VEHICLE THEREFOR
CN118224954B (en) * 2024-03-26 2025-12-05 意特利（滁州）智能数控科技有限公司 A span gauge for detecting the parallelism of a split-type machine tool base.

Also Published As

Publication number Publication date
US1786583A (en) 1930-12-30
GB293131A (en) 1928-07-02
US1774681A (en) 1930-09-02
NL24821C (en)
FR652167A (en) 1929-03-04
BE349486A (en)
GB305429A (en) 1929-02-07
DE578221C (en) 1933-06-10
BE356974A (en)

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