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FR666320A - Avertisseur de trains - Google Patents

Avertisseur de trains

Info

Publication number
FR666320A
FR666320A FR666320DA FR666320A FR 666320 A FR666320 A FR 666320A FR 666320D A FR666320D A FR 666320DA FR 666320 A FR666320 A FR 666320A
Authority
FR
France
Prior art keywords
train alarm
train
alarm
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
English (en)
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.)
MECANIQUES ET D ORGANISATION I
Original Assignee
MECANIQUES ET D ORGANISATION I
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 MECANIQUES ET D ORGANISATION I filed Critical MECANIQUES ET D ORGANISATION I
Application granted granted Critical
Publication of FR666320A publication Critical patent/FR666320A/fr
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L1/00—Devices along the route controlled by interaction with the vehicle or train
    • B61L1/18—Railway track circuits
    • B61L1/181—Details
    • B61L1/187—Use of alternating current

Landscapes

  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Engineering (AREA)
FR666320D 1928-12-22 1928-12-22 Avertisseur de trains Expired FR666320A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR666320T 1928-12-22

Publications (1)

Publication Number Publication Date
FR666320A true FR666320A (fr) 1929-09-30

Family

ID=9013809

Family Applications (1)

Application Number Title Priority Date Filing Date
FR666320D Expired FR666320A (fr) 1928-12-22 1928-12-22 Avertisseur de trains

Country Status (1)

Country Link
FR (1) FR666320A (fr)

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