FR571638A - Telephone receiver - Google Patents

Telephone receiver

Info

Publication number
FR571638A
FR571638A FR571638DA FR571638A FR 571638 A FR571638 A FR 571638A FR 571638D A FR571638D A FR 571638DA FR 571638 A FR571638 A FR 571638A
Authority
FR
France
Prior art keywords
telephone receiver
telephone
receiver
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
Edward Alfred Graham
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 filed Critical
Application granted granted Critical
Publication of FR571638A publication Critical patent/FR571638A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R13/00Transducers having an acoustic diaphragm of magnetisable material directly co-acting with electromagnet
    • H04R13/02Telephone receivers

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Telephone Set Structure (AREA)
FR571638D 1923-05-28 1923-10-08 Telephone receiver Expired FR571638A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1408123A GB220990A (en) 1923-05-28 1923-05-28 Improvements in or relating to telephonic receivers

Publications (1)

Publication Number Publication Date
FR571638A true FR571638A (en) 1924-05-21

Family

ID=10034636

Family Applications (1)

Application Number Title Priority Date Filing Date
FR571638D Expired FR571638A (en) 1923-05-28 1923-10-08 Telephone receiver

Country Status (2)

Country Link
FR (1) FR571638A (en)
GB (1) GB220990A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8295536B2 (en) 2010-03-31 2012-10-23 Bose Corporation Moving magnet levered loudspeaker
US8295537B2 (en) 2010-03-31 2012-10-23 Bose Corporation Loudspeaker moment and torque balancing
US9055370B2 (en) 2012-08-31 2015-06-09 Bose Corporation Vibration-reducing passive radiators

Also Published As

Publication number Publication date
GB220990A (en) 1924-08-28

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