FR737294A - Automatic sound signaling device for railways - Google Patents

Automatic sound signaling device for railways

Info

Publication number
FR737294A
FR737294A FR737294DA FR737294A FR 737294 A FR737294 A FR 737294A FR 737294D A FR737294D A FR 737294DA FR 737294 A FR737294 A FR 737294A
Authority
FR
France
Prior art keywords
railways
signaling device
automatic sound
sound signaling
automatic
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
Paul Kettler
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 filed Critical
Application granted granted Critical
Publication of FR737294A publication Critical patent/FR737294A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L29/00—Safety means for rail/road crossing traffic
    • B61L29/24—Means for warning road traffic that a gate is closed or closing, or that rail traffic is approaching, e.g. for visible or audible warning

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
FR737294D 1932-05-19 1932-05-19 Automatic sound signaling device for railways Expired FR737294A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR737294T 1932-05-19

Publications (1)

Publication Number Publication Date
FR737294A true FR737294A (en) 1932-12-09

Family

ID=9131688

Family Applications (1)

Application Number Title Priority Date Filing Date
FR737294D Expired FR737294A (en) 1932-05-19 1932-05-19 Automatic sound signaling device for railways

Country Status (1)

Country Link
FR (1) FR737294A (en)

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