FR648344A - - Google Patents
Info
- Publication number
- FR648344A FR648344A FR648344DA FR648344A FR 648344 A FR648344 A FR 648344A FR 648344D A FR648344D A FR 648344DA FR 648344 A FR648344 A FR 648344A
- 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
- B61L19/00—Arrangements for interlocking between points and signals by means of a single interlocking device, e.g. central control
- B61L19/02—Interlocking devices having mechanical or fluid-pressure operation
- B61L19/023—Interlocking devices having mechanical or fluid-pressure operation purely mechanical
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR648344A true FR648344A (zh) | 1928-12-07 |
Family
ID=1542865
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR648344D Expired FR648344A (zh) |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR648344A (zh) |
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0
- FR FR648344D patent/FR648344A/fr not_active Expired