FR931977A - Telephone device or similar transmission device - Google Patents

Telephone device or similar transmission device

Info

Publication number
FR931977A
FR931977A FR931977DA FR931977A FR 931977 A FR931977 A FR 931977A FR 931977D A FR931977D A FR 931977DA FR 931977 A FR931977 A FR 931977A
Authority
FR
France
Prior art keywords
similar transmission
telephone
transmission device
telephone device
similar
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 Electric Laboratories Inc
Original Assignee
Automatic Electric Laboratories Inc
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 Electric Laboratories Inc filed Critical Automatic Electric Laboratories Inc
Application granted granted Critical
Publication of FR931977A publication Critical patent/FR931977A/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)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
  • Telephonic Communication Services (AREA)
FR931977D 1942-10-15 1946-08-07 Telephone device or similar transmission device Expired FR931977A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB14466/42A GB560794A (en) 1942-10-15 1942-10-15 Improvements in telephone or like systems

Publications (1)

Publication Number Publication Date
FR931977A true FR931977A (en) 1948-03-09

Family

ID=10041694

Family Applications (1)

Application Number Title Priority Date Filing Date
FR931977D Expired FR931977A (en) 1942-10-15 1946-08-07 Telephone device or similar transmission device

Country Status (3)

Country Link
US (1) US2407150A (en)
FR (1) FR931977A (en)
GB (2) GB560794A (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2594719A (en) * 1945-05-19 1952-04-29 Automatic Elect Lab Voice-frequency telephone signaling system
GB654639A (en) * 1947-02-07 1951-06-27 Standard Telephones Cables Ltd Improvements in or relating to electric signalling systems
BE482466A (en) * 1947-04-29
US2579530A (en) * 1947-04-29 1951-12-25 Int Standard Electric Corp Four-wire to two-wire connecting circuit
US2566009A (en) * 1947-12-12 1951-08-28 Automatic Elect Lab Interexchange switching telephone system
US2530815A (en) * 1949-02-02 1950-11-21 Automatic Elect Lab Mobile radiotelephone system having a single channel and a single frequency
BE514718A (en) * 1951-10-16
US2890282A (en) * 1953-01-30 1959-06-09 Gen Dynamics Corp Automatic telephone system
DE1021016B (en) * 1955-04-29 1957-12-19 Standard Elektrik Ag Circuit arrangement for telecommunication and telecontrol systems for signal transmission according to a frequency code system

Also Published As

Publication number Publication date
US2407150A (en) 1946-09-03
GB560807A (en) 1944-04-20
GB560794A (en) 1944-04-20

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