FR602312A - Mèche de trépan - Google Patents

Mèche de trépan

Info

Publication number
FR602312A
FR602312A FR602312DA FR602312A FR 602312 A FR602312 A FR 602312A FR 602312D A FR602312D A FR 602312DA FR 602312 A FR602312 A FR 602312A
Authority
FR
France
Prior art keywords
trephine bit
trephine
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
Lester Clay Black
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 FR602312A publication Critical patent/FR602312A/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
    • E21B10/44—Bits with helical conveying portion, e.g. screw type bits; Augers with leading portion or with detachable parts

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)
FR602312D 1925-08-20 1925-08-20 Mèche de trépan Expired FR602312A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR602312T 1925-08-20

Publications (1)

Publication Number Publication Date
FR602312A true FR602312A (fr) 1926-03-17

Family

ID=8971902

Family Applications (1)

Application Number Title Priority Date Filing Date
FR602312D Expired FR602312A (fr) 1925-08-20 1925-08-20 Mèche de trépan

Country Status (1)

Country Link
FR (1) FR602312A (fr)

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