FR770521A - Provision for automatic telephone systems - Google Patents

Provision for automatic telephone systems

Info

Publication number
FR770521A
FR770521A FR770521DA FR770521A FR 770521 A FR770521 A FR 770521A FR 770521D A FR770521D A FR 770521DA FR 770521 A FR770521 A FR 770521A
Authority
FR
France
Prior art keywords
provision
telephone systems
automatic telephone
automatic
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.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
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 Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Application granted granted Critical
Publication of FR770521A publication Critical patent/FR770521A/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)
  • Exchange Systems With Centralized Control (AREA)
FR770521D 1933-03-23 1934-03-21 Provision for automatic telephone systems Expired FR770521A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE437591X 1933-03-23

Publications (1)

Publication Number Publication Date
FR770521A true FR770521A (en) 1934-09-15

Family

ID=20309935

Family Applications (1)

Application Number Title Priority Date Filing Date
FR770521D Expired FR770521A (en) 1933-03-23 1934-03-21 Provision for automatic telephone systems

Country Status (3)

Country Link
DE (1) DE635284C (en)
FR (1) FR770521A (en)
GB (1) GB437591A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2533342A (en) * 1947-10-09 1950-12-12 American Telephone & Telegraph Tandem switching system
GB761068A (en) * 1953-08-07 1956-11-07 Automatic Telephone & Elect Improvements in or relating to telephone or like systems
CN115326267B (en) * 2022-10-17 2023-01-24 山东省地质矿产勘查开发局第五地质大队（山东省第五地质矿产勘查院） Logging cable tension measurement alarm instrument and use method thereof

Also Published As

Publication number Publication date
GB437591A (en) 1935-10-22
DE635284C (en) 1936-09-17

Similar Documents

Publication Publication Date Title
FR782553A (en) Automatic telephone system
FR770521A (en) Provision for automatic telephone systems
FR772344A (en) Anti-vibrator support device for pipes
FR788463A (en) Auxiliary installation for telephone devices
FR761404A (en) Connection for electrical pipes
FR737355A (en) Number indicator for automatic telephones
FR739664A (en) Provision for automatic telephone systems
FR764401A (en) Connection fitting for pipes
FR756852A (en) Connection device for telephone systems
FR725250A (en) Coupling arrangement for telephone systems
FR770669A (en) Improvements to automatic telephone systems
FR770520A (en) Improvements to automatic telephone systems
FR768965A (en) Coupling arrangement for telephone systems
DK50145C (en) Device for automatic telephone systems.
FR790317A (en) Provision for telephone installations
FR783559A (en) Dispatching system for electrical installations
DK50345C (en) Coupling device for automatic Telephone systems.
DK50376C (en) Coupling device for automatic Telephone systems.
DK50510C (en) Coupling device for automatic Telephone systems.
DK49578C (en) Coupling device for automatic Telephone systems.
FR768331A (en) Automatic regulator for motor-compressor units or similar installations
FI13630A (en) Halva automatic telephone system
DK48473C (en) Device for automatic telephone systems.
FR798840A (en) Pipe connection
CH236317A (en) Repeater circuit for telecommunications installations.