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FR710472A - Improvements to electrical signal systems - Google Patents

Improvements to electrical signal systems

Info

Publication number
FR710472A
FR710472A FR710472DA FR710472A FR 710472 A FR710472 A FR 710472A FR 710472D A FR710472D A FR 710472DA FR 710472 A FR710472 A FR 710472A
Authority
FR
France
Prior art keywords
electrical signal
signal systems
systems
electrical
signal
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
Other languages
French (fr)
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.)
Associated Telephone and Telegraph Co
Original Assignee
Associated Telephone and Telegraph Co
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 US413205A external-priority patent/US2095730A/en
Application filed by Associated Telephone and Telegraph Co filed Critical Associated Telephone and Telegraph Co
Application granted granted Critical
Publication of FR710472A publication Critical patent/FR710472A/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
    • H04L12/16—Arrangements for providing special services to substations
    • H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
    • H04L12/1804—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast for stock exchange and similar applications
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/26—Devices for calling a subscriber
    • H04M1/27—Devices whereby a plurality of signals may be stored simultaneously
    • H04M1/272—Devices whereby a plurality of signals may be stored simultaneously with provision for storing only one subscriber number at a time, e.g. by keyboard or dial

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Finance (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Financial Or Insurance-Related Operations Such As Payment And Settlement (AREA)
FR710472D 1929-12-11 1930-12-09 Improvements to electrical signal systems Expired FR710472A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US413205A US2095730A (en) 1929-12-11 1929-12-11 Stock quotation system
US527905A US2158101A (en) 1929-12-11 1931-04-06 Stock quotation system
US540993A US2179736A (en) 1929-12-11 1931-05-29 Stock quotation system

Publications (1)

Publication Number Publication Date
FR710472A true FR710472A (en) 1931-08-24

Family

ID=27410975

Family Applications (1)

Application Number Title Priority Date Filing Date
FR710472D Expired FR710472A (en) 1929-12-11 1930-12-09 Improvements to electrical signal systems

Country Status (4)

Country Link
US (2) US2158101A (en)
BE (1) BE375708A (en)
FR (1) FR710472A (en)
GB (2) GB368369A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2569443A (en) * 1946-06-06 1951-10-02 Bell Telephone Labor Inc Telegraph storage system
US2714626A (en) * 1951-12-11 1955-08-02 Bell Telephone Labor Inc Private line intercommunicating teletypewriter system

Also Published As

Publication number Publication date
US2158101A (en) 1939-05-16
US2179736A (en) 1939-11-14
GB368369A (en) 1932-03-01
BE375708A (en)
GB370500A (en) 1932-04-01

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