FR643424A - Improvements to automatic or semi-automatic telephone systems - Google Patents

Improvements to automatic or semi-automatic telephone systems

Info

Publication number
FR643424A
FR643424A FR643424DA FR643424A FR 643424 A FR643424 A FR 643424A FR 643424D A FR643424D A FR 643424DA FR 643424 A FR643424 A FR 643424A
Authority
FR
France
Prior art keywords
automatic
semi
telephone systems
automatic telephone
systems
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.)
Thales SA
Original Assignee
Le Materiel Telephonique Thomson CSF
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 Le Materiel Telephonique Thomson CSF filed Critical Le Materiel Telephonique Thomson CSF
Application granted granted Critical
Publication of FR643424A publication Critical patent/FR643424A/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)
  • Monitoring And Testing Of Exchanges (AREA)
  • Structure Of Telephone Exchanges (AREA)
FR643424D 1927-05-24 1927-11-07 Improvements to automatic or semi-automatic telephone systems Expired FR643424A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1399227A GB296044A (en) 1927-05-24 1927-05-24 Improvements in automatic or semi-automatic telephone systems

Publications (1)

Publication Number Publication Date
FR643424A true FR643424A (en) 1928-09-17

Family

ID=10033049

Family Applications (1)

Application Number Title Priority Date Filing Date
FR643424D Expired FR643424A (en) 1927-05-24 1927-11-07 Improvements to automatic or semi-automatic telephone systems

Country Status (2)

Country Link
FR (1) FR643424A (en)
GB (1) GB296044A (en)

Also Published As

Publication number Publication date
GB296044A (en) 1928-08-24

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