FR883649A - Electrical signaling systems - Google Patents

Electrical signaling systems

Info

Publication number
FR883649A
FR883649A FR883649DA FR883649A FR 883649 A FR883649 A FR 883649A FR 883649D A FR883649D A FR 883649DA FR 883649 A FR883649 A FR 883649A
Authority
FR
France
Prior art keywords
signaling systems
electrical signaling
electrical
systems
signaling
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.)
Thales SA
Original Assignee
Le Materiel Telephonique Thomson CSF
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 Le Materiel Telephonique Thomson CSF filed Critical Le Materiel Telephonique Thomson CSF
Application granted granted Critical
Publication of FR883649A publication Critical patent/FR883649A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/30—Signalling arrangements; Manipulation of signalling currents
    • H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
    • H04Q1/442—Signalling arrangements; Manipulation of signalling currents using alternate current with out-of-voice band signalling frequencies
    • H04Q1/4423—Signalling arrangements; Manipulation of signalling currents using alternate current with out-of-voice band signalling frequencies using one signalling frequency

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)
FR883649D 1941-07-11 1942-06-29 Electrical signaling systems Expired FR883649A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL2474220X 1941-07-11

Publications (1)

Publication Number Publication Date
FR883649A true FR883649A (en) 1943-07-09

Family

ID=19874317

Family Applications (1)

Application Number Title Priority Date Filing Date
FR883649D Expired FR883649A (en) 1941-07-11 1942-06-29 Electrical signaling systems

Country Status (3)

Country Link
US (1) US2474220A (en)
FR (1) FR883649A (en)
NL (1) NL56428C (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1964110A (en) * 1931-11-10 1934-06-26 American Telephone & Telegraph Control system
US1932606A (en) * 1932-06-11 1933-10-31 American Telephone & Telegraph Gas filled discharge tube control system
US2022030A (en) * 1935-02-16 1935-11-26 Bell Telephone Labor Inc Signaling system
US2104142A (en) * 1935-12-27 1938-01-04 American Telephone & Telegraph Gas-filled tube circuits
US2214572A (en) * 1939-04-25 1940-09-10 Press Wireless Inc Printing telegraph motor control method and apparatus

Also Published As

Publication number Publication date
NL56428C (en)
US2474220A (en) 1949-06-28

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