GB191407331A - Improvements in or relating to Telephone Systems. - Google Patents

Improvements in or relating to Telephone Systems.

Info

Publication number
GB191407331A
GB191407331A GB191407331DA GB191407331A GB 191407331 A GB191407331 A GB 191407331A GB 191407331D A GB191407331D A GB 191407331DA GB 191407331 A GB191407331 A GB 191407331A
Authority
GB
United Kingdom
Prior art keywords
circuit
station
condenser
switch
systems
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
Edward Alfred Graham
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 GB191407331A publication Critical patent/GB191407331A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/001—Two-way communication systems between a limited number of parties

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
GB191407331D 1914-03-23 1914-03-23 Improvements in or relating to Telephone Systems. Expired GB191407331A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB191407331T 1914-03-23

Publications (1)

Publication Number Publication Date
GB191407331A true GB191407331A (en) 1914-11-05

Family

ID=32647755

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191407331D Expired GB191407331A (en) 1914-03-23 1914-03-23 Improvements in or relating to Telephone Systems.

Country Status (2)

Country Link
FR (1) FR476397A (fr)
GB (1) GB191407331A (fr)

Also Published As

Publication number Publication date
FR476397A (fr) 1915-07-29

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