FR498969A - Improvements to automatic telephone networks - Google Patents

Improvements to automatic telephone networks

Info

Publication number
FR498969A
FR498969A FR498969A FR498969DA FR498969A FR 498969 A FR498969 A FR 498969A FR 498969 A FR498969 A FR 498969A FR 498969D A FR498969D A FR 498969DA FR 498969 A FR498969 A FR 498969A
Authority
FR
France
Prior art keywords
telephone networks
automatic telephone
automatic
networks
telephone
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
FR498969A
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 FR498969A publication Critical patent/FR498969A/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)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
FR498969A 1918-05-04 1919-05-03 Improvements to automatic telephone networks Expired FR498969A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US232616A US1346093A (en) 1918-05-04 1918-05-04 Automatic telephone system

Publications (1)

Publication Number Publication Date
FR498969A true FR498969A (en) 1920-01-28

Family

ID=22873850

Family Applications (1)

Application Number Title Priority Date Filing Date
FR498969A Expired FR498969A (en) 1918-05-04 1919-05-03 Improvements to automatic telephone networks

Country Status (2)

Country Link
US (1) US1346093A (en)
FR (1) FR498969A (en)

Also Published As

Publication number Publication date
US1346093A (en) 1920-07-06

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