US842577A - Core-drill. - Google Patents

Core-drill. Download PDF

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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
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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
Application number
US?419?006A
Inventor
George E Okell
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Individual
Original Assignee
Individual
Publication date
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Publication of US842577A publication Critical patent/US842577A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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

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  • 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

US?419?006A Core-drill. Expired - Lifetime US842577A (en)

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

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ID=2911047

Family Applications (1)

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US?419?006A Expired - Lifetime US842577A (en) Core-drill.

Country Status (1)

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US (1) US842577A (en)

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