FR777693A - - Google Patents
Info
- Publication number
- FR777693A FR777693A FR777693DA FR777693A FR 777693 A FR777693 A FR 777693A FR 777693D A FR777693D A FR 777693DA FR 777693 A FR777693 A FR 777693A
- 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
- B61L29/288—Wiring diagram of the signal control circuits
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR777693A true FR777693A (zh) | 1935-02-25 |
Family
ID=1552227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR777693D Expired FR777693A (zh) |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR777693A (zh) |
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0
- FR FR777693D patent/FR777693A/fr not_active Expired