GB225604A - Improvements in or relating to portable loud speaking telephonic apparatus - Google Patents

Improvements in or relating to portable loud speaking telephonic apparatus

Info

Publication number
GB225604A
GB225604A GB2183523A GB2183523A GB225604A GB 225604 A GB225604 A GB 225604A GB 2183523 A GB2183523 A GB 2183523A GB 2183523 A GB2183523 A GB 2183523A GB 225604 A GB225604 A GB 225604A
Authority
GB
United Kingdom
Prior art keywords
relating
telephonic apparatus
loud speaking
portable loud
portable
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
GB2183523A
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
Priority to GB2183523A priority Critical patent/GB225604A/en
Publication of GB225604A publication Critical patent/GB225604A/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
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • H04R1/028—Casings; Cabinets ; Supports therefor; Mountings therein associated with devices performing functions other than acoustics, e.g. electric candles

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Carriages For Children, Sleds, And Other Hand-Operated Vehicles (AREA)
  • Treatment Of Fiber Materials (AREA)

Abstract

225,604. Graham, E. A. Aug. 29, 1923. Receivers fitted with horns; supporting.-A loud-speaking receiver b is fixed to a horn a which is mounted in trunnions at d on a fork e, this fork being itself pivoted at g to a base f which may stand on a table or hang upon rails' or hooks fixed to a wall or the like.
GB2183523A 1923-08-29 1923-08-29 Improvements in or relating to portable loud speaking telephonic apparatus Expired GB225604A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2183523A GB225604A (en) 1923-08-29 1923-08-29 Improvements in or relating to portable loud speaking telephonic apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2183523A GB225604A (en) 1923-08-29 1923-08-29 Improvements in or relating to portable loud speaking telephonic apparatus

Publications (1)

Publication Number Publication Date
GB225604A true GB225604A (en) 1924-12-01

Family

ID=10169598

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2183523A Expired GB225604A (en) 1923-08-29 1923-08-29 Improvements in or relating to portable loud speaking telephonic apparatus

Country Status (1)

Country Link
GB (1) GB225604A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4868888A (en) * 1986-10-17 1989-09-19 Wang Laboratories, Inc. Audio communications module for an office chair

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4868888A (en) * 1986-10-17 1989-09-19 Wang Laboratories, Inc. Audio communications module for an office chair

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