GB389922A - Circuit arrangement for manually operated telegraph exchange systems - Google Patents

Circuit arrangement for manually operated telegraph exchange systems

Info

Publication number
GB389922A
GB389922A GB3427331A GB3427331A GB389922A GB 389922 A GB389922 A GB 389922A GB 3427331 A GB3427331 A GB 3427331A GB 3427331 A GB3427331 A GB 3427331A GB 389922 A GB389922 A GB 389922A
Authority
GB
United Kingdom
Prior art keywords
relay
circuit
signal
exchange
contact
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
GB3427331A
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.)
Siemens and Halske AG
Siemens Corp
Original Assignee
Siemens and Halske AG
Siemens Corp
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 Siemens and Halske AG, Siemens Corp filed Critical Siemens and Halske AG
Publication of GB389922A publication Critical patent/GB389922A/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
    • H04L12/02—Details
    • H04L12/04—Switchboards

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Interface Circuits In Exchanges (AREA)
GB3427331A 1930-12-25 1931-12-10 Circuit arrangement for manually operated telegraph exchange systems Expired GB389922A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE611096T 1930-12-25

Publications (1)

Publication Number Publication Date
GB389922A true GB389922A (en) 1933-03-30

Family

ID=34812883

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3427331A Expired GB389922A (en) 1930-12-25 1931-12-10 Circuit arrangement for manually operated telegraph exchange systems

Country Status (4)

Country Link
BE (1) BE384976A (enrdf_load_stackoverflow)
DE (1) DE611096C (enrdf_load_stackoverflow)
FR (1) FR728211A (enrdf_load_stackoverflow)
GB (1) GB389922A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
DE611096C (de) 1935-03-22
FR728211A (fr) 1932-07-02
BE384976A (enrdf_load_stackoverflow)

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