GB556928A - Improvements in or relating to automatic or semi-automatic telephone systems - Google Patents

Improvements in or relating to automatic or semi-automatic telephone systems

Info

Publication number
GB556928A
GB556928A GB1487043A GB1487043A GB556928A GB 556928 A GB556928 A GB 556928A GB 1487043 A GB1487043 A GB 1487043A GB 1487043 A GB1487043 A GB 1487043A GB 556928 A GB556928 A GB 556928A
Authority
GB
United Kingdom
Prior art keywords
automatic
relating
semi
telephone systems
automatic telephone
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
GB1487043A
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 GB1487043A priority Critical patent/GB556928A/en
Publication of GB556928A publication Critical patent/GB556928A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H67/00—Electrically-operated selector switches
    • H01H67/02—Multi-position wiper switches
    • H01H67/04—Multi-position wiper switches having wipers movable only in one direction for purpose of selection
    • H01H67/12—Linear-motion switches

Landscapes

  • Structure Of Telephone Exchanges (AREA)
  • Exchange Systems With Centralized Control (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)

Abstract

556,928. Automatic exchange systems. AUTOMATIC TELEPHONE & ELECTRIC CO., Ltd., and BAKER, G. T. April 20, 1942, No. 14870/43. Divided out of 556,922. Drawings to Specification. [Class 40 (iv)] The description is the same as a part of that in Specification 556,922. The claims relate to features of the switch construction. Specifications 545,634, 549,047, 556,918, 556,919, 556,920, 556,921 and 556,926 also are referred to.
GB1487043A 1942-04-20 1942-04-20 Improvements in or relating to automatic or semi-automatic telephone systems Expired GB556928A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1487043A GB556928A (en) 1942-04-20 1942-04-20 Improvements in or relating to automatic or semi-automatic telephone systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1487043A GB556928A (en) 1942-04-20 1942-04-20 Improvements in or relating to automatic or semi-automatic telephone systems

Publications (1)

Publication Number Publication Date
GB556928A true GB556928A (en) 1943-10-27

Family

ID=10048959

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1487043A Expired GB556928A (en) 1942-04-20 1942-04-20 Improvements in or relating to automatic or semi-automatic telephone systems

Country Status (1)

Country Link
GB (1) GB556928A (en)

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