US842577A - Core-drill. - Google Patents
Core-drill. Download PDFInfo
- Publication number
- US842577A US842577A US?419?006A US842577DA US842577A US 842577 A US842577 A US 842577A US 842577D A US842577D A US 842577DA US 842577 A US842577 A US 842577A
- Authority
- US
- United States
- Prior art keywords
- drill
- core
- 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 - Lifetime
Links
Images
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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/16—Applying separate balls or pellets by the pressure of the drill, so-called shot-drilling
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)
- Drilling Tools (AREA)
Description
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US842577TA |
Publications (1)
Publication Number | Publication Date |
---|---|
US842577A true US842577A (en) | 1907-01-29 |
Family
ID=2911047
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US?419?006A Expired - Lifetime US842577A (en) | Core-drill. |
Country Status (1)
Country | Link |
---|---|
US (1) | US842577A (en) |
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0
- US US?419?006A patent/US842577A/en not_active Expired - Lifetime
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