GB253631A - Improvements in automatic and semi-automatic telephone systems - Google Patents

Improvements in automatic and semi-automatic telephone systems

Info

Publication number
GB253631A
GB253631A GB813325A GB813325A GB253631A GB 253631 A GB253631 A GB 253631A GB 813325 A GB813325 A GB 813325A GB 813325 A GB813325 A GB 813325A GB 253631 A GB253631 A GB 253631A
Authority
GB
United Kingdom
Prior art keywords
relay
release
springs
switch
series
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
GB813325A
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.)
ROY ADAMSON MOIR
WESTERN ELECTRIC CO Ltd
AT&T Corp
Original Assignee
ROY ADAMSON MOIR
WESTERN ELECTRIC CO Ltd
Western Electric Co Inc
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
Priority to FR616719D priority Critical patent/FR616719A/fr
Application filed by ROY ADAMSON MOIR, WESTERN ELECTRIC CO Ltd, Western Electric Co Inc filed Critical ROY ADAMSON MOIR
Priority to GB813325A priority patent/GB253631A/en
Publication of GB253631A publication Critical patent/GB253631A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Interface Circuits In Exchanges (AREA)
GB813325A 1925-03-26 1925-03-26 Improvements in automatic and semi-automatic telephone systems Expired GB253631A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR616719D FR616719A (enrdf_load_stackoverflow) 1925-03-26
GB813325A GB253631A (en) 1925-03-26 1925-03-26 Improvements in automatic and semi-automatic telephone systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB813325A GB253631A (en) 1925-03-26 1925-03-26 Improvements in automatic and semi-automatic telephone systems

Publications (1)

Publication Number Publication Date
GB253631A true GB253631A (en) 1926-06-24

Family

ID=9846372

Family Applications (1)

Application Number Title Priority Date Filing Date
GB813325A Expired GB253631A (en) 1925-03-26 1925-03-26 Improvements in automatic and semi-automatic telephone systems

Country Status (2)

Country Link
FR (1) FR616719A (enrdf_load_stackoverflow)
GB (1) GB253631A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
FR616719A (enrdf_load_stackoverflow) 1927-02-07

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