FR554906A - - Google Patents
Info
- Publication number
- FR554906A FR554906A FR554906DA FR554906A FR 554906 A FR554906 A FR 554906A FR 554906D A FR554906D A FR 554906DA FR 554906 A FR554906 A FR 554906A
- 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
- B61L3/00—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal
- B61L3/02—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control
- B61L3/04—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control controlling mechanically
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR554906A true FR554906A (xx) | 1923-06-19 |
Family
ID=1538636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR554906D Expired FR554906A (xx) |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR554906A (xx) |
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0
- FR FR554906D patent/FR554906A/fr not_active Expired