GB100113A - Improvements in or relating to Semi-automatic Telephone Exchange Systems. - Google Patents

Improvements in or relating to Semi-automatic Telephone Exchange Systems.

Info

Publication number
GB100113A
GB100113A GB2660/16A GB266016A GB100113A GB 100113 A GB100113 A GB 100113A GB 2660/16 A GB2660/16 A GB 2660/16A GB 266016 A GB266016 A GB 266016A GB 100113 A GB100113 A GB 100113A
Authority
GB
United Kingdom
Prior art keywords
relay
register
contact
group
operator
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
GB2660/16A
Other languages
English (en)
Inventor
Carl Axel Wilhelm Hultman
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB100113A publication Critical patent/GB100113A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/60—Semi-automatic systems, i.e. in which the numerical selection of the outgoing line is under the control of an operator
    • H04M3/62—Keyboard equipment

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Structure Of Telephone Exchanges (AREA)
  • Interface Circuits In Exchanges (AREA)
GB2660/16A 1915-02-23 1916-02-22 Improvements in or relating to Semi-automatic Telephone Exchange Systems. Expired GB100113A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE100113X 1915-02-23

Publications (1)

Publication Number Publication Date
GB100113A true GB100113A (en) 1917-02-22

Family

ID=32653600

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2660/16A Expired GB100113A (en) 1915-02-23 1916-02-22 Improvements in or relating to Semi-automatic Telephone Exchange Systems.

Country Status (2)

Country Link
DE (1) DE310810C (enrdf_load_stackoverflow)
GB (1) GB100113A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
DE310810C (enrdf_load_stackoverflow)

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