FR998977A - - Google Patents
Info
- Publication number
- FR998977A FR998977A FR998977DA FR998977A FR 998977 A FR998977 A FR 998977A FR 998977D A FR998977D A FR 998977DA FR 998977 A FR998977 A FR 998977A
- 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
- E01B7/12—Fixed frogs made of one part or composite
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR998977A true FR998977A (ja) | 1952-01-24 |
Family
ID=1566968
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR998977D Expired FR998977A (ja) |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR998977A (ja) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1161574B (de) * | 1960-04-28 | 1964-01-23 | Gennevilliers Acieries | Herzstueck aus aluminothermisch miteinander verschweissten Vignolschienen |
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0
- FR FR998977D patent/FR998977A/fr not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1161574B (de) * | 1960-04-28 | 1964-01-23 | Gennevilliers Acieries | Herzstueck aus aluminothermisch miteinander verschweissten Vignolschienen |