FR741048A - - Google Patents
Info
- Publication number
- FR741048A FR741048A FR741048DA FR741048A FR 741048 A FR741048 A FR 741048A FR 741048D A FR741048D A FR 741048DA FR 741048 A FR741048 A FR 741048A
- 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
- B61L23/00—Control, warning or like safety means along the route or between vehicles or trains
- B61L23/08—Control, warning or like safety means along the route or between vehicles or trains for controlling traffic in one direction only
- B61L23/14—Control, warning or like safety means along the route or between vehicles or trains for controlling traffic in one direction only automatically operated
- B61L23/16—Track circuits specially adapted for section blocking
- B61L23/166—Track circuits specially adapted for section blocking using alternating current
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR741048A true FR741048A (ko) | 1933-02-04 |
Family
ID=1545636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR741048D Expired FR741048A (ko) |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR741048A (ko) |
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0
- FR FR741048D patent/FR741048A/fr not_active Expired