FR20146E - Loudspeaker telephone receiver - Google Patents

Loudspeaker telephone receiver

Info

Publication number
FR20146E
FR20146E FR20146A FR20146DA FR20146E FR 20146 E FR20146 E FR 20146E FR 20146 A FR20146 A FR 20146A FR 20146D A FR20146D A FR 20146DA FR 20146 E FR20146 E FR 20146E
Authority
FR
France
Prior art keywords
telephone receiver
loudspeaker telephone
loudspeaker
receiver
telephone
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
FR20146A
Other languages
French (fr)
Inventor
Maurice Meunier
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.)
Individual
Original Assignee
Individual
Publication date
Application granted granted Critical
Publication of FR20146E publication Critical patent/FR20146E/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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/42—Combinations of transducers with fluid-pressure or other non-electrical amplifying means

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Electromagnetism (AREA)
FR20146A Loudspeaker telephone receiver Expired FR20146E (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR20146T

Publications (1)

Publication Number Publication Date
FR20146E true FR20146E (en) 1916-10-06

Family

ID=8660109

Family Applications (2)

Application Number Title Priority Date Filing Date
FR20146A Expired FR20146E (en) Loudspeaker telephone receiver
FR478148A Expired FR478148A (en) 1915-03-22 Loudspeaker telephone receiver

Family Applications After (1)

Application Number Title Priority Date Filing Date
FR478148A Expired FR478148A (en) 1915-03-22 Loudspeaker telephone receiver

Country Status (1)

Country Link
FR (2) FR478148A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2100853A1 (en) * 1970-07-02 1972-03-24 Ciba Geigy Ag

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2100853A1 (en) * 1970-07-02 1972-03-24 Ciba Geigy Ag

Also Published As

Publication number Publication date
FR478148A (en) 1915-11-24

Similar Documents

Publication Publication Date Title
FR20146E (en) Loudspeaker telephone receiver
CH72777A (en) Loudspeaker telephone receiver
FR494283A (en) Telephone receiver
FR19534E (en) Loudspeaker telephone
FR495429A (en) Telephone transmitter
CH60213A (en) Loudspeaker telephone
FR476043A (en) Telephone receiver
FR436383A (en) Telephone receiver
CH73154A (en) Thermal telephone
FR429052A (en) Home speaker phone
DK33446C (en) Cordless Telephone System.
FR490940A (en) Telephone receiver
FR457392A (en) Telephone transmitter
FR450768A (en) Speaker phone system
FR488251A (en) Microphone
FR493288A (en) Microphone
CA172888A (en) Inter-c0mmunicating telephone
CA172219A (en) Telephone signal
FR492572A (en) Telephone transmitter and receiver
FR523793A (en) Telephone transmitter
FR489694A (en) Telephone transmitter
FR483939A (en) Telephone transmitter
FR441339A (en) Telephone transmitter
FR446872A (en) Telephone transmitter
FR493689A (en) Improvements to telephone cabinets