FR928167A - Improvements to telephone systems - Google Patents

Improvements to telephone systems

Info

Publication number
FR928167A
FR928167A FR928167DA FR928167A FR 928167 A FR928167 A FR 928167A FR 928167D A FR928167D A FR 928167DA FR 928167 A FR928167 A FR 928167A
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)
Inventor
Fernand-Pierre Gohorel
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
CSF Compagnie Generale de Telegraphie sans Fil SA
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 CSF Compagnie Generale de Telegraphie sans Fil SA filed Critical CSF Compagnie Generale de Telegraphie sans Fil SA
Application granted granted Critical
Publication of FR928167A publication Critical patent/FR928167A/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)
  • Exchange Systems With Centralized Control (AREA)
FR928167D 1947-02-14 1946-05-14 Improvements to telephone systems Expired FR928167A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US728633A US2546998A (en) 1947-02-14 1947-02-14 Secondary preselector

Publications (1)

Publication Number Publication Date
FR928167A true FR928167A (en) 1947-11-20

Family

ID=24927635

Family Applications (1)

Application Number Title Priority Date Filing Date
FR928167D Expired FR928167A (en) 1947-02-14 1946-05-14 Improvements to telephone systems

Country Status (2)

Country Link
US (1) US2546998A (en)
FR (1) FR928167A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL163817B (en) * 1949-10-26 Huels Chemische Werke Ag PROCESS FOR PREPARATION OF PREPARATIONS CONTAINING POLYBUTENE-1 AND A FILLER.
BE518579A (en) * 1952-03-21

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR581736A (en) * 1923-05-17 1924-12-04
US1645972A (en) * 1923-10-05 1927-10-18 Relay Automatic Telephone Co Telephone trunking scheme
GB355924A (en) * 1930-08-07 1931-09-03 Siemens Brothers & Co Ltd Improvements relating to automatic telephone systems
US2322650A (en) * 1941-12-06 1943-06-22 Associated Electric Lab Inc Impulsing apparatus for signaling systems

Also Published As

Publication number Publication date
US2546998A (en) 1951-04-03

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