FR554015A - - Google Patents
Info
- Publication number
- FR554015A FR554015A FR554015DA FR554015A FR 554015 A FR554015 A FR 554015A FR 554015D A FR554015D A FR 554015DA FR 554015 A FR554015 A FR 554015A
- 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
- 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)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR554015A true FR554015A (enEXAMPLES) | 1923-06-04 |
Family
ID=1538525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR554015D Expired FR554015A (enEXAMPLES) |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR554015A (enEXAMPLES) |
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0
- FR FR554015D patent/FR554015A/fr not_active Expired