FR529855A - Foret pour perforatrice - Google Patents

Foret pour perforatrice

Info

Publication number
FR529855A
FR529855A FR529855DA FR529855A FR 529855 A FR529855 A FR 529855A FR 529855D A FR529855D A FR 529855DA FR 529855 A FR529855 A FR 529855A
Authority
FR
France
Prior art keywords
drill bit
drill
bit
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
Alfred Stapf
Hans Hundrieser
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 filed Critical
Application granted granted Critical
Publication of FR529855A publication Critical patent/FR529855A/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
    • E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
    • E21B10/56—Button-type inserts

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)
FR529855D 1920-03-25 1921-01-15 Foret pour perforatrice Expired FR529855A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE529855X 1920-03-25

Publications (1)

Publication Number Publication Date
FR529855A true FR529855A (fr) 1921-12-08

Family

ID=1536920

Family Applications (1)

Application Number Title Priority Date Filing Date
FR529855D Expired FR529855A (fr) 1920-03-25 1921-01-15 Foret pour perforatrice

Country Status (1)

Country Link
FR (1) FR529855A (fr)

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