FR620588A - Improvements to telephone systems - Google Patents

Improvements to telephone systems

Info

Publication number
FR620588A
FR620588A FR620588DA FR620588A FR 620588 A FR620588 A FR 620588A FR 620588D A FR620588D A FR 620588DA FR 620588 A FR620588 A FR 620588A
Authority
FR
France
Prior art keywords
telephone systems
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 FR620588A publication Critical patent/FR620588A/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)
FR620588D 1925-08-15 1926-08-24 Improvements to telephone systems Expired FR620588A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2053925A GB261109A (en) 1925-08-15 1925-08-15 Improvements in or relating to telephone systems

Publications (1)

Publication Number Publication Date
FR620588A true FR620588A (en) 1927-04-25

Family

ID=10147553

Family Applications (1)

Application Number Title Priority Date Filing Date
FR620588D Expired FR620588A (en) 1925-08-15 1926-08-24 Improvements to telephone systems

Country Status (2)

Country Link
FR (1) FR620588A (en)
GB (1) GB261109A (en)

Also Published As

Publication number Publication date
GB261109A (en) 1926-11-15

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