GB408286A - 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
GB408286A
GB408286A GB2775432A GB2775432A GB408286A GB 408286 A GB408286 A GB 408286A GB 2775432 A GB2775432 A GB 2775432A GB 2775432 A GB2775432 A GB 2775432A GB 408286 A GB408286 A GB 408286A
Authority
GB
United Kingdom
Prior art keywords
relay
final
switch
over
path
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
GB2775432A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 BE408286D priority Critical patent/BE408286A/xx
Application filed by Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB2775432A priority patent/GB408286A/en
Priority to DEST51329D priority patent/DE641718C/de
Publication of GB408286A publication Critical patent/GB408286A/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)
  • Relay Circuits (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
GB2775432A 1932-10-06 1932-10-06 Improvements in or relating to automatic or semi-automatic telephone systems Expired GB408286A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
BE408286D BE408286A (enrdf_load_stackoverflow) 1932-10-06
GB2775432A GB408286A (en) 1932-10-06 1932-10-06 Improvements in or relating to automatic or semi-automatic telephone systems
DEST51329D DE641718C (de) 1932-10-06 1933-09-30 Schaltungsanordnung fuer selbsttaetige oder halbselbsttaetige Fernsprechanlagen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2775432A GB408286A (en) 1932-10-06 1932-10-06 Improvements in or relating to automatic or semi-automatic telephone systems

Publications (1)

Publication Number Publication Date
GB408286A true GB408286A (en) 1934-04-06

Family

ID=10264715

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2775432A Expired GB408286A (en) 1932-10-06 1932-10-06 Improvements in or relating to automatic or semi-automatic telephone systems

Country Status (3)

Country Link
BE (1) BE408286A (enrdf_load_stackoverflow)
DE (1) DE641718C (enrdf_load_stackoverflow)
GB (1) GB408286A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
BE408286A (enrdf_load_stackoverflow)
DE641718C (de) 1937-02-13

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