FR408276A - - Google Patents
Info
- Publication number
- FR408276A FR408276A FR408276DA FR408276A FR 408276 A FR408276 A FR 408276A FR 408276D A FR408276D A FR 408276DA FR 408276 A FR408276 A FR 408276A
- 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
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/22—Rods or pipes with helical structure
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR408276A true FR408276A (xx) | 1900-01-01 |
Family
ID=1452511
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR408276D Expired FR408276A (xx) |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR408276A (xx) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0361189A1 (de) * | 1988-09-12 | 1990-04-04 | Narex Praha, Statni Podnik | Bohrwerkzeug mit schraubenförmigem Schaft |
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0
- FR FR408276D patent/FR408276A/fr not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0361189A1 (de) * | 1988-09-12 | 1990-04-04 | Narex Praha, Statni Podnik | Bohrwerkzeug mit schraubenförmigem Schaft |