FR1452094A - Improvements to selective antenna systems - Google Patents

Improvements to selective antenna systems

Info

Publication number
FR1452094A
FR1452094A FR22300A FR22300A FR1452094A FR 1452094 A FR1452094 A FR 1452094A FR 22300 A FR22300 A FR 22300A FR 22300 A FR22300 A FR 22300A FR 1452094 A FR1452094 A FR 1452094A
Authority
FR
France
Prior art keywords
antenna systems
selective antenna
selective
systems
antenna
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
FR22300A
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.)
Compagnie Francaise Thomson Houston SA
Original Assignee
Compagnie Francaise Thomson Houston 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 Compagnie Francaise Thomson Houston SA filed Critical Compagnie Francaise Thomson Houston SA
Priority to FR22300A priority Critical patent/FR1452094A/en
Application granted granted Critical
Publication of FR1452094A publication Critical patent/FR1452094A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L25/00—Recording or indicating positions or identities of vehicles or trains or setting of track apparatus
    • B61L25/02—Indicating or recording positions or identities of vehicles or trains
    • B61L25/04—Indicating or recording train identities

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
FR22300A 1965-06-25 1965-06-25 Improvements to selective antenna systems Expired FR1452094A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR22300A FR1452094A (en) 1965-06-25 1965-06-25 Improvements to selective antenna systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR22300A FR1452094A (en) 1965-06-25 1965-06-25 Improvements to selective antenna systems

Publications (1)

Publication Number Publication Date
FR1452094A true FR1452094A (en) 1966-02-25

Family

ID=8583081

Family Applications (1)

Application Number Title Priority Date Filing Date
FR22300A Expired FR1452094A (en) 1965-06-25 1965-06-25 Improvements to selective antenna systems

Country Status (1)

Country Link
FR (1) FR1452094A (en)

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