GB191116956A - Telephonic Instruments including Transmitters. - Google Patents

Telephonic Instruments including Transmitters.

Info

Publication number
GB191116956A
GB191116956A GB191116956DA GB191116956A GB 191116956 A GB191116956 A GB 191116956A GB 191116956D A GB191116956D A GB 191116956DA GB 191116956 A GB191116956 A GB 191116956A
Authority
GB
United Kingdom
Prior art keywords
instruments including
including transmitters
telephonic instruments
fluid
telephonic
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
English (en)
Inventor
Charles Robert Marks Edward
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.)
GEORGE ROGESTER WEBB
Original Assignee
GEORGE ROGESTER WEBB
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 GEORGE ROGESTER WEBB filed Critical GEORGE ROGESTER WEBB
Application granted granted Critical
Publication of GB191116956A publication Critical patent/GB191116956A/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
    • H04R21/00—Variable-resistance transducers
    • H04R21/02—Microphones
    • H04R21/023—Microphones with more than one granular chamber

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
GB191116956D 1911-07-24 1911-07-24 Telephonic Instruments including Transmitters. Expired GB191116956A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB191116956T 1911-07-24

Publications (1)

Publication Number Publication Date
GB191116956A true GB191116956A (en) 1912-05-09

Family

ID=34357433

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191116956D Expired GB191116956A (en) 1911-07-24 1911-07-24 Telephonic Instruments including Transmitters.

Country Status (2)

Country Link
FR (1) FR434390A (fr)
GB (1) GB191116956A (fr)

Also Published As

Publication number Publication date
FR434390A (fr)

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