FR589046A - - Google Patents
Info
- Publication number
- FR589046A FR589046A FR589046DA FR589046A FR 589046 A FR589046 A FR 589046A FR 589046D A FR589046D A FR 589046DA FR 589046 A FR589046 A FR 589046A
- 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
- B61L29/08—Operation of gates; Combined operation of gates and signals
- B61L29/18—Operation by approaching rail vehicle or train
- B61L29/20—Operation by approaching rail vehicle or train mechanically
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR589046A true FR589046A (en:Method) | 1925-05-22 |
Family
ID=1540002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR589046D Expired FR589046A (en:Method) |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR589046A (en:Method) |
-
0
- FR FR589046D patent/FR589046A/fr not_active Expired