FR512156A - Improvements to telephone systems using self-mechanical switches - Google Patents

Improvements to telephone systems using self-mechanical switches

Info

Publication number
FR512156A
FR512156A FR512156A FR512156DA FR512156A FR 512156 A FR512156 A FR 512156A FR 512156 A FR512156 A FR 512156A FR 512156D A FR512156D A FR 512156DA FR 512156 A FR512156 A FR 512156A
Authority
FR
France
Prior art keywords
self
telephone systems
mechanical switches
switches
mechanical
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
FR512156A
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 FR512156A publication Critical patent/FR512156A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
FR512156A 1918-12-28 1919-06-26 Improvements to telephone systems using self-mechanical switches Expired FR512156A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US268649A US1518815A (en) 1918-12-28 1918-12-28 Machine-switching telephone-exchange system

Publications (1)

Publication Number Publication Date
FR512156A true FR512156A (en) 1921-01-17

Family

ID=23023903

Family Applications (5)

Application Number Title Priority Date Filing Date
FR24339A Expired FR24339E (en) 1918-12-28 Improvements to telephone systems using self-mechanical switches
FR512156A Expired FR512156A (en) 1918-12-28 1919-06-26 Improvements to telephone systems using self-mechanical switches
FR22574A Expired FR22574E (en) 1918-12-28 1919-08-13 Improvements to telephone systems using auto-mechanical action switches
FR22575A Expired FR22575E (en) 1918-12-28 1919-08-14 Improvements to telephone systems using self-mechanical switches
FR26385D Expired FR26385E (en) 1918-12-28 1922-05-17 Improvements to telephone systems using self-mechanical switches

Family Applications Before (1)

Application Number Title Priority Date Filing Date
FR24339A Expired FR24339E (en) 1918-12-28 Improvements to telephone systems using self-mechanical switches

Family Applications After (3)

Application Number Title Priority Date Filing Date
FR22574A Expired FR22574E (en) 1918-12-28 1919-08-13 Improvements to telephone systems using auto-mechanical action switches
FR22575A Expired FR22575E (en) 1918-12-28 1919-08-14 Improvements to telephone systems using self-mechanical switches
FR26385D Expired FR26385E (en) 1918-12-28 1922-05-17 Improvements to telephone systems using self-mechanical switches

Country Status (2)

Country Link
US (2) US1518815A (en)
FR (5) FR512156A (en)

Also Published As

Publication number Publication date
US1365269A (en) 1921-01-11
FR24339E (en) 1922-06-20
US1518815A (en) 1924-12-09
FR26385E (en) 1923-11-13
FR22575E (en) 1921-07-23
FR22574E (en) 1921-07-23

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