GB735690A - Improvements in or relating to telephone systems - Google Patents

Improvements in or relating to telephone systems

Info

Publication number
GB735690A
GB735690A GB901354A GB901354A GB735690A GB 735690 A GB735690 A GB 735690A GB 901354 A GB901354 A GB 901354A GB 901354 A GB901354 A GB 901354A GB 735690 A GB735690 A GB 735690A
Authority
GB
United Kingdom
Prior art keywords
circuit
tube
transfer
relating
telephone 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
GB901354A
Inventor
Alan Davison
Ronald Threadgold
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.)
Automatic Telephone and Electric Co Ltd
Original Assignee
Automatic Telephone and Electric Co 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 Automatic Telephone and Electric Co Ltd filed Critical Automatic Telephone and Electric Co Ltd
Priority to GB901354A priority Critical patent/GB735690A/en
Publication of GB735690A publication Critical patent/GB735690A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker
    • H04Q3/52—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker using static devices in switching stages, e.g. electronic switching arrangements
    • H04Q3/525—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker using static devices in switching stages, e.g. electronic switching arrangements using tubes in the switching stages

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Devices For Supply Of Signal Current (AREA)

Abstract

735,690. Automatic exchange systems. AUTOMATIC TELEPHONE & ELECTRIC CO., Ltd. Nov. 10, 1952 [Dec. 14, 1951], No. 9013/54. Divided out of 735,635. Drawings to Specification. Class 40 (4). In an arrangement for transferring a digit from one circuit to a second circuit both circuits include a plurality of gas-discharge tubes and the striking of a tube in the first circuit causes a bias to be applied to a corresponding transfer tube which transfer tube is struck when transfer is required, to cause current flow over a transfer path associated with a corresponding tube in said second circuit, to enable said corresponding tube in said circuit to strike. The subject-matter of the Specification is identical with that of Specification 735,635 and with part of that of Specification 735,689, but the claims differ.
GB901354A 1951-12-14 1951-12-14 Improvements in or relating to telephone systems Expired GB735690A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB901354A GB735690A (en) 1951-12-14 1951-12-14 Improvements in or relating to telephone systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB901354A GB735690A (en) 1951-12-14 1951-12-14 Improvements in or relating to telephone systems

Publications (1)

Publication Number Publication Date
GB735690A true GB735690A (en) 1955-08-24

Family

ID=9863667

Family Applications (1)

Application Number Title Priority Date Filing Date
GB901354A Expired GB735690A (en) 1951-12-14 1951-12-14 Improvements in or relating to telephone systems

Country Status (1)

Country Link
GB (1) GB735690A (en)

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