FR547614A - - Google Patents
Info
- Publication number
- FR547614A FR547614A FR547614DA FR547614A FR 547614 A FR547614 A FR 547614A FR 547614D A FR547614D A FR 547614DA FR 547614 A FR547614 A FR 547614A
- 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
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B7/00—Switches; Crossings
- E01B7/10—Frogs
- E01B7/14—Frogs with movable parts
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR547614A true FR547614A (ref) | 1922-12-20 |
Family
ID=1538030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR547614D Expired FR547614A (ref) |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR547614A (ref) |
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0
- FR FR547614D patent/FR547614A/fr not_active Expired