DE303030C - - Google Patents

Info

Publication number
DE303030C
DE303030C DENDAT303030D DE303030DA DE303030C DE 303030 C DE303030 C DE 303030C DE NDAT303030 D DENDAT303030 D DE NDAT303030D DE 303030D A DE303030D A DE 303030DA DE 303030 C DE303030 C DE 303030C
Authority
DE
Germany
Prior art keywords
resistances
drill
recesses
act
extend
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.)
Active
Application number
DENDAT303030D
Other languages
German (de)
English (en)
Publication of DE303030C publication Critical patent/DE303030C/de
Active 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
    • E21B10/42—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail 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)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
DENDAT303030D Active DE303030C (enrdf_load_html_response)

Publications (1)

Publication Number Publication Date
DE303030C true DE303030C (enrdf_load_html_response)

Family

ID=556780

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT303030D Active DE303030C (enrdf_load_html_response)

Country Status (1)

Country Link
DE (1) DE303030C (enrdf_load_html_response)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1031951B (de) * 1953-11-13 1958-06-12 Alfred Kunkel Mauerbohrer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1031951B (de) * 1953-11-13 1958-06-12 Alfred Kunkel Mauerbohrer

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