FR579305A - - Google Patents
Info
- Publication number
- FR579305A FR579305A FR579305DA FR579305A FR 579305 A FR579305 A FR 579305A FR 579305D A FR579305D A FR 579305DA FR 579305 A FR579305 A FR 579305A
- 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
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D1/00—Sinking shafts
- E21D1/03—Sinking shafts mechanically, e.g. by loading shovels or loading buckets, scraping devices, conveying screws
- E21D1/06—Sinking shafts mechanically, e.g. by loading shovels or loading buckets, scraping devices, conveying screws with shaft-boring cutters
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR579305A true FR579305A (cs) | 1924-10-14 |
Family
ID=1539520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR579305D Expired FR579305A (cs) |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR579305A (cs) |
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0
- FR FR579305D patent/FR579305A/fr not_active Expired