FR514251A - Appareil de sécurité ferroviaire - Google Patents
Appareil de sécurité ferroviaireInfo
- Publication number
- FR514251A FR514251A FR514251A FR514251DA FR514251A FR 514251 A FR514251 A FR 514251A FR 514251 A FR514251 A FR 514251A FR 514251D A FR514251D A FR 514251DA FR 514251 A FR514251 A FR 514251A
- Authority
- FR
- France
- Prior art keywords
- safety apparatus
- railway safety
- railway
- safety
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L5/00—Local operating mechanisms for points or track-mounted scotch-blocks; Visible or audible signals; Local operating mechanisms for visible or audible signals
- B61L5/20—Audible signals, e.g. detonator audible signalling
- B61L5/203—Detonators; Track mounting means; Composition of the detonative product
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR514251T | 1920-04-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR514251A true FR514251A (fr) | 1921-03-07 |
Family
ID=8914056
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR514251A Expired FR514251A (fr) | 1920-04-07 | 1920-04-07 | Appareil de sécurité ferroviaire |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR514251A (fr) |
-
1920
- 1920-04-07 FR FR514251A patent/FR514251A/fr not_active Expired
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