FR770398A - Dromo-pétard à répétition - Google Patents
Dromo-pétard à répétitionInfo
- Publication number
- FR770398A FR770398A FR770398DA FR770398A FR 770398 A FR770398 A FR 770398A FR 770398D A FR770398D A FR 770398DA FR 770398 A FR770398 A FR 770398A
- Authority
- FR
- France
- Prior art keywords
- dromo
- firecracker
- repeating
- repeating dromo
- 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
- B61L5/22—Devices for initiating the release of detonators in a certain position of a signal
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR770398T | 1934-03-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR770398A true FR770398A (fr) | 1934-09-13 |
Family
ID=9186645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR770398D Expired FR770398A (fr) | 1934-03-19 | 1934-03-19 | Dromo-pétard à répétition |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR770398A (fr) |
-
1934
- 1934-03-19 FR FR770398D patent/FR770398A/fr not_active Expired
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