FR680124A - Système téléphonique à commutateurs chercheurs - Google Patents

Système téléphonique à commutateurs chercheurs

Info

Publication number
FR680124A
FR680124A FR680124DA FR680124A FR 680124 A FR680124 A FR 680124A FR 680124D A FR680124D A FR 680124DA FR 680124 A FR680124 A FR 680124A
Authority
FR
France
Prior art keywords
seeker
telephone system
switch telephone
switch
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
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.)
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
Application filed by Associated Telephone and Telegraph Co filed Critical Associated Telephone and Telegraph Co
Application granted granted Critical
Publication of FR680124A publication Critical patent/FR680124A/fr
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)
  • Monitoring And Testing Of Exchanges (AREA)
  • Relay Circuits (AREA)
FR680124D 1928-09-05 1929-08-09 Système téléphonique à commutateurs chercheurs Expired FR680124A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB25483/28A GB322242A (en) 1928-09-05 1928-09-05 Improvements in or relating to telephone systems

Publications (1)

Publication Number Publication Date
FR680124A true FR680124A (fr) 1930-04-25

Family

ID=10228427

Family Applications (1)

Application Number Title Priority Date Filing Date
FR680124D Expired FR680124A (fr) 1928-09-05 1929-08-09 Système téléphonique à commutateurs chercheurs

Country Status (3)

Country Link
US (1) US1823665A (fr)
FR (1) FR680124A (fr)
GB (1) GB322242A (fr)

Also Published As

Publication number Publication date
US1823665A (en) 1931-09-15
GB322242A (en) 1929-12-05

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