GB656562A - Improvements in or relating to telephone systems - Google Patents

Improvements in or relating to telephone systems

Info

Publication number
GB656562A
GB656562A GB509048A GB509048A GB656562A GB 656562 A GB656562 A GB 656562A GB 509048 A GB509048 A GB 509048A GB 509048 A GB509048 A GB 509048A GB 656562 A GB656562 A GB 656562A
Authority
GB
United Kingdom
Prior art keywords
relay
relays
operator
sender
over
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
GB509048A
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.)
AT&T Corp
Original Assignee
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 claimed from US335240A external-priority patent/US2259101A/en
Application filed by Western Electric Co Inc filed Critical Western Electric Co Inc
Publication of GB656562A publication Critical patent/GB656562A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/0004—Selecting arrangements using crossbar selectors in the switching stages

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
GB509048A 1940-05-15 1948-02-20 Improvements in or relating to telephone systems Expired GB656562A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US335240A US2259101A (en) 1940-05-15 1940-05-15 Telephone system

Publications (1)

Publication Number Publication Date
GB656562A true GB656562A (en) 1951-08-29

Family

ID=23310878

Family Applications (1)

Application Number Title Priority Date Filing Date
GB509048A Expired GB656562A (en) 1940-05-15 1948-02-20 Improvements in or relating to telephone systems

Country Status (2)

Country Link
GB (1) GB656562A (enrdf_load_stackoverflow)
NL (1) NL70952C (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
NL70952C (enrdf_load_stackoverflow)

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