FR599913A - Improvements to telephone systems - Google Patents

Improvements to telephone systems

Info

Publication number
FR599913A
FR599913A FR599913DA FR599913A FR 599913 A FR599913 A FR 599913A FR 599913D A FR599913D A FR 599913DA FR 599913 A FR599913 A FR 599913A
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.)
Relay Automatic Telephone Company Ltd
Original Assignee
Relay Automatic Telephone Company 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 Relay Automatic Telephone Company Ltd filed Critical Relay Automatic Telephone Company Ltd
Application granted granted Critical
Publication of FR599913A publication Critical patent/FR599913A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/0008—Selecting arrangements using relay selectors in the switching stages

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
FR599913D 1924-04-22 1925-04-10 Improvements to telephone systems Expired FR599913A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1000224A GB228751A (en) 1924-04-22 1924-04-22 Improvements in telephone systems

Publications (1)

Publication Number Publication Date
FR599913A true FR599913A (en) 1926-01-25

Family

ID=9959571

Family Applications (1)

Application Number Title Priority Date Filing Date
FR599913D Expired FR599913A (en) 1924-04-22 1925-04-10 Improvements to telephone systems

Country Status (2)

Country Link
FR (1) FR599913A (en)
GB (1) GB228751A (en)

Also Published As

Publication number Publication date
GB228751A (en) 1925-02-12

Similar Documents

Publication Publication Date Title
FR623645A (en) Improvements to telephone systems
FR630110A (en) Improvements to telephone systems
FR599913A (en) Improvements to telephone systems
FR585842A (en) Improvements to telephone systems
FR591871A (en) Improvements to telephone systems
FR622358A (en) Improvements to telephone systems
FR621050A (en) Improvements to telephone systems
FR618346A (en) Improvements relating to telephone systems
FR629974A (en) Improvements to telephone systems
FR590175A (en) Improvements to automatic telephone systems
FR616047A (en) Improvements to telephone systems
FR614477A (en) Improvements to telephone systems
FR610097A (en) Improvements to telephone systems
FR619924A (en) Improvements to telephone systems
FR615460A (en) Improvements to telephone systems
FR620741A (en) Improvements to telephone systems
FR609976A (en) Improvements to telephone systems
FR600183A (en) Improvements to telephone systems
FR622351A (en) Improvements to telephone systems
FR604753A (en) Improvements to telephone systems
FR623537A (en) Improvements to telephone systems
FR608242A (en) Improvements to telephone systems
FR620588A (en) Improvements to telephone systems
FR608862A (en) Improvements to telephone systems
FR620949A (en) Improvements to telephone systems