GB138530A - Improvements in or relating to telephone systems - Google Patents

Improvements in or relating to telephone systems

Info

Publication number
GB138530A
GB138530A GB1336219A GB1336219A GB138530A GB 138530 A GB138530 A GB 138530A GB 1336219 A GB1336219 A GB 1336219A GB 1336219 A GB1336219 A GB 1336219A GB 138530 A GB138530 A GB 138530A
Authority
GB
United Kingdom
Prior art keywords
lead
switch
station
condenser
primary
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
GB1336219A
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.)
INTERNAT CALLOPHONE CORP
Original Assignee
INTERNAT CALLOPHONE CORP
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 INTERNAT CALLOPHONE CORP filed Critical INTERNAT CALLOPHONE CORP
Priority to GB1336219A priority Critical patent/GB138530A/en
Priority to FR501517A priority patent/FR501517A/fr
Publication of GB138530A publication Critical patent/GB138530A/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)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
GB1336219A 1919-05-27 1919-05-27 Improvements in or relating to telephone systems Expired GB138530A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB1336219A GB138530A (en) 1919-05-27 1919-05-27 Improvements in or relating to telephone systems
FR501517A FR501517A (fr) 1919-05-27 1919-07-08 Perfectionnements aux systèmes téléphoniques

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1336219A GB138530A (en) 1919-05-27 1919-05-27 Improvements in or relating to telephone systems

Publications (1)

Publication Number Publication Date
GB138530A true GB138530A (en) 1920-02-12

Family

ID=10021562

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1336219A Expired GB138530A (en) 1919-05-27 1919-05-27 Improvements in or relating to telephone systems

Country Status (2)

Country Link
FR (1) FR501517A (fr)
GB (1) GB138530A (fr)

Also Published As

Publication number Publication date
FR501517A (fr) 1920-04-16

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