GB684531A - Improvements in or relating to telephone systems - Google Patents

Improvements in or relating to telephone systems

Info

Publication number
GB684531A
GB684531A GB1208/51A GB120851A GB684531A GB 684531 A GB684531 A GB 684531A GB 1208/51 A GB1208/51 A GB 1208/51A GB 120851 A GB120851 A GB 120851A GB 684531 A GB684531 A GB 684531A
Authority
GB
United Kingdom
Prior art keywords
tube
line
wires
fires
tubes
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
GB1208/51A
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 GB684531A publication Critical patent/GB684531A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Devices For Supply Of Signal Current (AREA)
GB1208/51A 1950-01-16 1951-01-16 Improvements in or relating to telephone systems Expired GB684531A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE684531X 1950-01-16

Publications (1)

Publication Number Publication Date
GB684531A true GB684531A (en) 1952-12-17

Family

ID=20315016

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1208/51A Expired GB684531A (en) 1950-01-16 1951-01-16 Improvements in or relating to telephone systems

Country Status (4)

Country Link
BE (1) BE500623A (forum.php)
DE (1) DE853301C (forum.php)
FR (1) FR1031047A (forum.php)
GB (1) GB684531A (forum.php)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE555540A (forum.php) * 1953-07-03
DE1029422B (de) * 1955-09-30 1958-05-08 Siemens Ag Relaislose Teilnehmerschaltung fuer Fernmelde-, insbesondere Fernsprechanlagen

Also Published As

Publication number Publication date
BE500623A (forum.php)
DE853301C (de) 1952-10-23
FR1031047A (fr) 1953-06-18

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