FR882217A - Electric transmission systems - Google Patents

Electric transmission systems

Info

Publication number
FR882217A
FR882217A FR882217DA FR882217A FR 882217 A FR882217 A FR 882217A FR 882217D A FR882217D A FR 882217DA FR 882217 A FR882217 A FR 882217A
Authority
FR
France
Prior art keywords
transmission systems
electric transmission
electric
systems
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.)
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 FR882217A publication Critical patent/FR882217A/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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Devices For Supply Of Signal Current (AREA)
FR882217D 1942-07-09 1942-05-20 Electric transmission systems Expired FR882217A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB954042A GB554786A (en) 1942-07-09 1942-07-09 Electrical signal transmission system

Publications (1)

Publication Number Publication Date
FR882217A true FR882217A (en) 1943-05-21

Family

ID=9873964

Family Applications (1)

Application Number Title Priority Date Filing Date
FR882217D Expired FR882217A (en) 1942-07-09 1942-05-20 Electric transmission systems

Country Status (4)

Country Link
BE (1) BE446464A (en)
CH (1) CH233480A (en)
FR (1) FR882217A (en)
GB (1) GB554786A (en)

Also Published As

Publication number Publication date
GB554786A (en) 1943-07-19
BE446464A (en) 1948-04-17
CH233480A (en) 1944-07-31

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