GB709504A - Means for identifying and marking telephone calls - Google Patents

Means for identifying and marking telephone calls

Info

Publication number
GB709504A
GB709504A GB16887/52A GB1688752A GB709504A GB 709504 A GB709504 A GB 709504A GB 16887/52 A GB16887/52 A GB 16887/52A GB 1688752 A GB1688752 A GB 1688752A GB 709504 A GB709504 A GB 709504A
Authority
GB
United Kingdom
Prior art keywords
gap
fired
tube
lit
marker
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
GB16887/52A
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.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
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 Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Publication of GB709504A publication Critical patent/GB709504A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
    • H04M15/08—Metering calls to called party, i.e. B-party charged for the communication

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
GB16887/52A 1951-07-05 1952-07-04 Means for identifying and marking telephone calls Expired GB709504A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE709504X 1951-07-05

Publications (1)

Publication Number Publication Date
GB709504A true GB709504A (en) 1954-05-26

Family

ID=20315684

Family Applications (1)

Application Number Title Priority Date Filing Date
GB16887/52A Expired GB709504A (en) 1951-07-05 1952-07-04 Means for identifying and marking telephone calls

Country Status (3)

Country Link
BE (1) BE512622A (nl)
FR (1) FR1063262A (nl)
GB (1) GB709504A (nl)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2954439A (en) * 1953-07-03 1960-09-27 Int Standard Electric Corp Electrical identification circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2954439A (en) * 1953-07-03 1960-09-27 Int Standard Electric Corp Electrical identification circuit

Also Published As

Publication number Publication date
FR1063262A (fr) 1954-04-30
BE512622A (nl)

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