FR489337A - Perforatrice - Google Patents
PerforatriceInfo
- Publication number
- FR489337A FR489337A FR489337DA FR489337A FR 489337 A FR489337 A FR 489337A FR 489337D A FR489337D A FR 489337DA FR 489337 A FR489337 A FR 489337A
- Authority
- FR
- France
- Prior art keywords
- punch
- Prior art date
- 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
- E21B6/00—Drives for drilling with combined rotary and percussive action
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE489337X | 1917-04-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR489337A true FR489337A (fr) | 1919-01-22 |
Family
ID=1525588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR489337D Expired FR489337A (fr) | 1917-04-20 | 1918-03-19 | Perforatrice |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR489337A (fr) |
-
1918
- 1918-03-19 FR FR489337D patent/FR489337A/fr not_active Expired
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