FR614279A - Improvements to automatic or semi-automatic telephone systems - Google Patents

Improvements to automatic or semi-automatic telephone systems

Info

Publication number
FR614279A
FR614279A FR614279DA FR614279A FR 614279 A FR614279 A FR 614279A FR 614279D A FR614279D A FR 614279DA FR 614279 A FR614279 A FR 614279A
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)
Inventor
Charles Wilfrid Wilman
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.)
COVENTRY AUTOM TELEPHONES Ltd
Original Assignee
COVENTRY AUTOM TELEPHONES Ltd
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 COVENTRY AUTOM TELEPHONES Ltd filed Critical COVENTRY AUTOM TELEPHONES Ltd
Application granted granted Critical
Publication of FR614279A publication Critical patent/FR614279A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/0016—Arrangements providing connection between exchanges

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Interface Circuits In Exchanges (AREA)
FR614279D 1925-01-22 1926-03-16 Improvements to automatic or semi-automatic telephone systems Expired FR614279A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB196425A GB249958A (en) 1925-01-22 1925-01-22 Improvements in or relating to automatic or semi-automatic telephone systems

Publications (1)

Publication Number Publication Date
FR614279A true FR614279A (en) 1926-12-10

Family

ID=9731144

Family Applications (1)

Application Number Title Priority Date Filing Date
FR614279D Expired FR614279A (en) 1925-01-22 1926-03-16 Improvements to automatic or semi-automatic telephone systems

Country Status (2)

Country Link
FR (1) FR614279A (en)
GB (1) GB249958A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE948703C (en) * 1944-08-04 1956-09-06 Telefonbau & Normalzeit Gmbh Circuit arrangement for telephone systems with dialer operation and several exchanges connected in series to control the traffic over transit systems

Also Published As

Publication number Publication date
GB249958A (en) 1926-04-08

Similar Documents

Publication Publication Date Title
FR654067A (en) Improvements to automatic or semi-automatic telephone systems
FR698488A (en) Improvements to automatic or semi-automatic telephone systems
FR711122A (en) Improvements to automatic or semi-automatic telephone systems
FR687017A (en) Improvements to automatic or semi-automatic telephone systems
FR614279A (en) Improvements to automatic or semi-automatic telephone systems
FR612702A (en) Improvements to automatic or semi-automatic telephone systems
FR587804A (en) Improvements to automatic and semi-automatic telephone systems
FR595106A (en) Improvements to automatic or semi-automatic telephone systems
FR614153A (en) Improvements to automatic or semi-automatic telephone systems
FR616718A (en) Improvements to automatic or semi-automatic telephone systems
FR693974A (en) Improvements to automatic or semi-automatic telephone systems
FR649430A (en) Improvements to automatic or semi-automatic telephone systems
FR663090A (en) Improvements to automatic or semi-automatic telephone systems
FR643424A (en) Improvements to automatic or semi-automatic telephone systems
FR620971A (en) Improvements to automatic telephone systems
FR618081A (en) Improvements to automatic telephone systems
FR618360A (en) Improvements to automatic telephone systems
FR623324A (en) Improvements relating to automatic or semi-automatic telephone systems
FR590175A (en) Improvements to automatic telephone systems
FR620351A (en) Improvements to automatic telephone systems
FR679639A (en) Improvements to automatic or semi-automatic telephone systems
FR664862A (en) Improvements to automatic or semi-automatic telephone systems
FR665397A (en) Improvements to automatic or semi-automatic telephone systems
FR659757A (en) Improvements to automatic or semi-automatic telephone systems
FR612989A (en) Improvements to automatic and semi-automatic telephone systems