FR500916A - Improvements in the use of research switches in automatic telephony - Google Patents

Improvements in the use of research switches in automatic telephony

Info

Publication number
FR500916A
FR500916A FR500916A FR500916DA FR500916A FR 500916 A FR500916 A FR 500916A FR 500916 A FR500916 A FR 500916A FR 500916D A FR500916D A FR 500916DA FR 500916 A FR500916 A FR 500916A
Authority
FR
France
Prior art keywords
switches
research
automatic telephony
telephony
automatic
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
FR500916A
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.)
Compagnie Francaise Thomson Houston SA
Original Assignee
Compagnie Francaise Thomson Houston SA
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 Compagnie Francaise Thomson Houston SA filed Critical Compagnie Francaise Thomson Houston SA
Application granted granted Critical
Publication of FR500916A publication Critical patent/FR500916A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Structure Of Telephone Exchanges (AREA)
FR500916A 1916-02-14 1917-01-17 Improvements in the use of research switches in automatic telephony Expired FR500916A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US7816116A 1916-02-14 1916-02-14
US599176A US1492396A (en) 1916-02-14 1922-11-06 Automatic telephone system

Publications (1)

Publication Number Publication Date
FR500916A true FR500916A (en) 1920-03-27

Family

ID=26760170

Family Applications (1)

Application Number Title Priority Date Filing Date
FR500916A Expired FR500916A (en) 1916-02-14 1917-01-17 Improvements in the use of research switches in automatic telephony

Country Status (2)

Country Link
US (2) US1439124A (en)
FR (1) FR500916A (en)

Also Published As

Publication number Publication date
US1492396A (en) 1924-04-29
US1439124A (en) 1922-12-19

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