FR452363A - Improvements to electrical signal systems - Google Patents

Improvements to electrical signal systems

Info

Publication number
FR452363A
FR452363A FR452363DA FR452363A FR 452363 A FR452363 A FR 452363A FR 452363D A FR452363D A FR 452363DA FR 452363 A FR452363 A FR 452363A
Authority
FR
France
Prior art keywords
electrical signal
signal systems
systems
electrical
signal
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)
Inventor
Charles Walker Ward
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of FR452363A publication Critical patent/FR452363A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L23/00—Control, warning or like safety means along the route or between vehicles or trains
    • B61L23/22—Control, warning or like safety means along the route or between vehicles or trains for controlling traffic in two directions over the same pair of rails

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
FR452363D 1912-10-09 1912-10-09 Improvements to electrical signal systems Expired FR452363A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR452363T 1912-10-09

Publications (1)

Publication Number Publication Date
FR452363A true FR452363A (en) 1913-05-15

Family

ID=1492593

Family Applications (1)

Application Number Title Priority Date Filing Date
FR452363D Expired FR452363A (en) 1912-10-09 1912-10-09 Improvements to electrical signal systems

Country Status (1)

Country Link
FR (1) FR452363A (en)

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