GB190922580A - Improvements in and relating to Telephones and Sound Reproducing Appliances. - Google Patents

Improvements in and relating to Telephones and Sound Reproducing Appliances.

Info

Publication number
GB190922580A
GB190922580A GB190922580DA GB190922580A GB 190922580 A GB190922580 A GB 190922580A GB 190922580D A GB190922580D A GB 190922580DA GB 190922580 A GB190922580 A GB 190922580A
Authority
GB
United Kingdom
Prior art keywords
telephones
relating
sound reproducing
microphone
appliances
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
George Regester Webb
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 GB190922580A publication Critical patent/GB190922580A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
  • Telephonic Communication Services (AREA)
GB190922580D 1909-10-04 1909-10-04 Improvements in and relating to Telephones and Sound Reproducing Appliances. Expired GB190922580A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB190922580T 1909-10-04

Publications (1)

Publication Number Publication Date
GB190922580A true GB190922580A (en) 1910-09-29

Family

ID=32557907

Family Applications (1)

Application Number Title Priority Date Filing Date
GB190922580D Expired GB190922580A (en) 1909-10-04 1909-10-04 Improvements in and relating to Telephones and Sound Reproducing Appliances.

Country Status (3)

Country Link
DE (1) DE231731C (enExample)
FR (1) FR408985A (enExample)
GB (1) GB190922580A (enExample)

Also Published As

Publication number Publication date
DE231731C (enExample)
FR408985A (enExample)

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