FR602932A - Loudspeaker electro-magnetic sound receiver - Google Patents

Loudspeaker electro-magnetic sound receiver

Info

Publication number
FR602932A
FR602932A FR602932DA FR602932A FR 602932 A FR602932 A FR 602932A FR 602932D A FR602932D A FR 602932DA FR 602932 A FR602932 A FR 602932A
Authority
FR
France
Prior art keywords
sound receiver
magnetic sound
loudspeaker
electro
loudspeaker electro
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
Wallace Andrew Bartlett
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.)
BRANDES Ltd
Original Assignee
BRANDES 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 BRANDES Ltd filed Critical BRANDES Ltd
Application granted granted Critical
Publication of FR602932A publication Critical patent/FR602932A/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
    • H04R13/00—Transducers having an acoustic diaphragm of magnetisable material directly co-acting with electromagnet
    • H04R13/02—Telephone receivers

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
FR602932D 1925-03-25 1925-09-04 Loudspeaker electro-magnetic sound receiver Expired FR602932A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB799325A GB237531A (en) 1925-03-25 1925-03-25 Improvements relating to electromagnetic sound reproducers

Publications (1)

Publication Number Publication Date
FR602932A true FR602932A (en) 1926-04-03

Family

ID=9843701

Family Applications (1)

Application Number Title Priority Date Filing Date
FR602932D Expired FR602932A (en) 1925-03-25 1925-09-04 Loudspeaker electro-magnetic sound receiver

Country Status (2)

Country Link
FR (1) FR602932A (en)
GB (1) GB237531A (en)

Also Published As

Publication number Publication date
GB237531A (en) 1925-07-30

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