GB164421A - Improvements in or relating to telephones - Google Patents

Improvements in or relating to telephones

Info

Publication number
GB164421A
GB164421A GB359620A GB359620A GB164421A GB 164421 A GB164421 A GB 164421A GB 359620 A GB359620 A GB 359620A GB 359620 A GB359620 A GB 359620A GB 164421 A GB164421 A GB 164421A
Authority
GB
United Kingdom
Prior art keywords
tapper
key
combined
transmitter
normally
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
GB359620A
Other languages
English (en)
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.)
TELEPHONE Manufacturing Co 1920 Ltd
Original Assignee
TELEPHONE Manufacturing Co 1920 Ltd
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 TELEPHONE Manufacturing Co 1920 Ltd filed Critical TELEPHONE Manufacturing Co 1920 Ltd
Priority to GB359620A priority Critical patent/GB164421A/en
Priority to FR530245D priority patent/FR530245A/fr
Publication of GB164421A publication Critical patent/GB164421A/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)
  • Telephone Set Structure (AREA)
  • Push-Button Switches (AREA)
GB359620A 1920-02-05 1920-02-05 Improvements in or relating to telephones Expired GB164421A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB359620A GB164421A (en) 1920-02-05 1920-02-05 Improvements in or relating to telephones
FR530245D FR530245A (fr) 1920-02-05 1921-01-27 Perfectionnements aux téléphones

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB359620A GB164421A (en) 1920-02-05 1920-02-05 Improvements in or relating to telephones

Publications (1)

Publication Number Publication Date
GB164421A true GB164421A (en) 1921-06-06

Family

ID=9761303

Family Applications (1)

Application Number Title Priority Date Filing Date
GB359620A Expired GB164421A (en) 1920-02-05 1920-02-05 Improvements in or relating to telephones

Country Status (2)

Country Link
FR (1) FR530245A (fr)
GB (1) GB164421A (fr)

Also Published As

Publication number Publication date
FR530245A (fr) 1921-12-17

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