FR932188A - Improvements to electrical transmission devices - Google Patents

Improvements to electrical transmission devices

Info

Publication number
FR932188A
FR932188A FR932188DA FR932188A FR 932188 A FR932188 A FR 932188A FR 932188D A FR932188D A FR 932188DA FR 932188 A FR932188 A FR 932188A
Authority
FR
France
Prior art keywords
transmission devices
electrical transmission
electrical
devices
transmission
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.)
Automatic Telephone and Electric Co Ltd
Original Assignee
Automatic Telephone and Electric Co 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 Automatic Telephone and Electric Co Ltd filed Critical Automatic Telephone and Electric Co Ltd
Application granted granted Critical
Publication of FR932188A publication Critical patent/FR932188A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/58—Arrangements providing connection between main exchange and sub-exchange or satellite
    • H04Q3/62—Arrangements providing connection between main exchange and sub-exchange or satellite for connecting to private branch exchanges
    • H04Q3/625—Arrangements in the private branch exchange
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
    • C03B5/12—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture in shaft furnaces

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Interface Circuits In Exchanges (AREA)
FR932188D 1943-07-08 1946-08-12 Improvements to electrical transmission devices Expired FR932188A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB11075/43A GB566779A (en) 1943-07-08 1943-07-08 Improvements in electrical signalling systems

Publications (1)

Publication Number Publication Date
FR932188A true FR932188A (en) 1948-03-15

Family

ID=9979556

Family Applications (1)

Application Number Title Priority Date Filing Date
FR932188D Expired FR932188A (en) 1943-07-08 1946-08-12 Improvements to electrical transmission devices

Country Status (5)

Country Link
US (1) US2421169A (en)
ES (1) ES166712A1 (en)
FR (1) FR932188A (en)
GB (1) GB566779A (en)
NL (1) NL63260C (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB575312A (en) * 1944-01-12 1946-02-12 Automatic Telephone & Elect Improvements in or relating to telephone systems
US2623164A (en) * 1948-11-01 1952-12-23 Automatic Elect Lab Single channel, single frequency, mobile radio telephone system
US2740841A (en) * 1953-01-16 1956-04-03 Itt Automatic rural crossbar switching system
US3234514A (en) * 1958-12-12 1966-02-08 Int Standard Electric Corp Electric pulse signalling system having switching means connected to a constant-voltage source
DE1762060A1 (en) * 1967-03-31 1970-04-30 Nippon Electric Co Inter-trunk dialing system for a telephone switched network

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1137223A (en) * 1914-03-02 1915-04-27 Western Electric Co Machine telephone switching system.
US1367583A (en) * 1918-04-02 1921-02-08 Bornett L Bobroff System for signaling
US1600358A (en) * 1923-12-27 1926-09-21 Coventry Autom Telephones Ltd Remote-control system
US1778077A (en) * 1924-10-11 1930-10-14 American Telephone & Telegraph Remote-control system

Also Published As

Publication number Publication date
ES166712A1 (en) 1944-08-16
GB566779A (en) 1945-01-12
US2421169A (en) 1947-05-27
NL63260C (en)

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