FR956139A - - Google Patents
Info
- Publication number
- FR956139A FR956139A FR956139DA FR956139A FR 956139 A FR956139 A FR 956139A FR 956139D A FR956139D A FR 956139DA FR 956139 A FR956139 A FR 956139A
- Authority
- FR
- France
- 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
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
- B61L29/28—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 electrically operated
- B61L29/286—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 electrically operated using conductor circuits controlled by the vehicle
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR956139A true FR956139A (ref) | 1950-01-26 |
Family
ID=1558733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR956139D Expired FR956139A (ref) |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR956139A (ref) |
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0
- FR FR956139D patent/FR956139A/fr not_active Expired