GB677421A - Telegraph exchange system - Google Patents

Telegraph exchange system

Info

Publication number
GB677421A
GB677421A GB34840/47A GB3484047A GB677421A GB 677421 A GB677421 A GB 677421A GB 34840/47 A GB34840/47 A GB 34840/47A GB 3484047 A GB3484047 A GB 3484047A GB 677421 A GB677421 A GB 677421A
Authority
GB
United Kingdom
Prior art keywords
relay
contact
subscriber
lines
calling
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
GB34840/47A
Other languages
English (en)
Inventor
Roelof Maarten Marie Oberman
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.)
Nederlanden Staat
Original Assignee
Nederlanden Staat
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 Nederlanden Staat filed Critical Nederlanden Staat
Publication of GB677421A publication Critical patent/GB677421A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Relay Circuits (AREA)
GB34840/47A 1943-09-13 1947-12-30 Telegraph exchange system Expired GB677421A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL677421X 1943-09-13

Publications (1)

Publication Number Publication Date
GB677421A true GB677421A (en) 1952-08-13

Family

ID=19802332

Family Applications (1)

Application Number Title Priority Date Filing Date
GB34840/47A Expired GB677421A (en) 1943-09-13 1947-12-30 Telegraph exchange system

Country Status (2)

Country Link
GB (1) GB677421A (enrdf_load_stackoverflow)
NL (1) NL58548C (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
NL58548C (enrdf_load_stackoverflow)

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