DE232873C - - Google Patents

Info

Publication number
DE232873C
DE232873C DENDAT232873D DE232873DA DE232873C DE 232873 C DE232873 C DE 232873C DE NDAT232873 D DENDAT232873 D DE NDAT232873D DE 232873D A DE232873D A DE 232873DA DE 232873 C DE232873 C DE 232873C
Authority
DE
Germany
Prior art keywords
bracket
drill
column
clamping column
hammer
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
DENDAT232873D
Other languages
German (de)
English (en)
Publication of DE232873C publication Critical patent/DE232873C/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
    • E21B15/00—Supports for the drilling machine, e.g. derricks or masts
    • E21B15/006—Means for anchoring the drilling machine to the ground

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)
  • Earth Drilling (AREA)
DENDAT232873D Active DE232873C (enrdf_load_stackoverflow)

Publications (1)

Publication Number Publication Date
DE232873C true DE232873C (enrdf_load_stackoverflow)

Family

ID=492860

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT232873D Active DE232873C (enrdf_load_stackoverflow)

Country Status (1)

Country Link
DE (1) DE232873C (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5053172A (en) * 1987-10-19 1991-10-01 Mitsubishi Denki Kabushiki Kaisha Method of cleaning semiconductor molding apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5053172A (en) * 1987-10-19 1991-10-01 Mitsubishi Denki Kabushiki Kaisha Method of cleaning semiconductor molding apparatus

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