FR494283A - Telephone receiver - Google Patents

Telephone receiver

Info

Publication number
FR494283A
FR494283A FR494283DA FR494283A FR 494283 A FR494283 A FR 494283A FR 494283D A FR494283D A FR 494283DA FR 494283 A FR494283 A FR 494283A
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
Alfred Williams
Leo Daft Williams
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
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 Individual filed Critical Individual
Application granted granted Critical
Publication of FR494283A publication Critical patent/FR494283A/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
    • H04R23/00—Transducers other than those covered by groups H04R9/00 - H04R21/00
    • H04R23/002—Transducers other than those covered by groups H04R9/00 - H04R21/00 using electrothermic-effect transducer

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Laminated Bodies (AREA)
  • Catalysts (AREA)
FR494283D 1916-02-15 1917-02-12 Telephone receiver Expired FR494283A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB224216A GB101996A (en) 1916-02-15 1916-02-15 An Improved Telephonic Receiver.

Publications (1)

Publication Number Publication Date
FR494283A true FR494283A (en) 1919-09-04

Family

ID=32243683

Family Applications (1)

Application Number Title Priority Date Filing Date
FR494283D Expired FR494283A (en) 1916-02-15 1917-02-12 Telephone receiver

Country Status (2)

Country Link
FR (1) FR494283A (en)
GB (1) GB101996A (en)

Also Published As

Publication number Publication date
GB101996A (en) 1916-11-09

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