FR411242A - Perfectionnements aux mèches-forets - Google Patents

Perfectionnements aux mèches-forets

Info

Publication number
FR411242A
FR411242A FR411242DA FR411242A FR 411242 A FR411242 A FR 411242A FR 411242D A FR411242D A FR 411242DA FR 411242 A FR411242 A FR 411242A
Authority
FR
France
Prior art keywords
drill bit
drill
bit
bit improvements
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
Application number
Other languages
English (en)
Inventor
Nicholas Dunstan
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of FR411242A publication Critical patent/FR411242A/fr
Expired legal-status Critical Current

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
    • E21B10/00—Drill bits
    • E21B10/36—Percussion drill bits

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)
FR411242D 1910-01-03 1910-01-03 Perfectionnements aux mèches-forets Expired FR411242A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR411242T 1910-01-03

Publications (1)

Publication Number Publication Date
FR411242A true FR411242A (fr) 1910-06-11

Family

ID=1455204

Family Applications (1)

Application Number Title Priority Date Filing Date
FR411242D Expired FR411242A (fr) 1910-01-03 1910-01-03 Perfectionnements aux mèches-forets

Country Status (1)

Country Link
FR (1) FR411242A (fr)

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