FR552346A - - Google Patents
Info
- Publication number
- FR552346A FR552346A FR552346DA FR552346A FR 552346 A FR552346 A FR 552346A FR 552346D A FR552346D A FR 552346DA FR 552346 A FR552346 A FR 552346A
- 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
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- 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 |
---|---|
FR552346A true FR552346A (fr) | 1923-04-28 |
Family
ID=1538445
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR552346D Expired FR552346A (fr) |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR552346A (fr) |
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0
- FR FR552346D patent/FR552346A/fr not_active Expired