NL42573C - - Google Patents

Info

Publication number
NL42573C
NL42573C NL42573DA NL42573C NL 42573 C NL42573 C NL 42573C NL 42573D A NL42573D A NL 42573DA NL 42573 C NL42573 C NL 42573C
Authority
NL
Netherlands
Application number
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.)
Publication of NL42573C publication Critical patent/NL42573C/xx

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
    • E21B4/00—Drives for drilling, used in the borehole
    • E21B4/06—Down-hole impacting means, e.g. hammers
    • E21B4/14—Fluid operated hammers

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)
NL42573D 1934-02-15 NL42573C (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP68949D DE631395C (de) 1934-02-15 1934-02-15 Mitnehmer fuer hydraulische Tiefbohrzylinder

Publications (1)

Publication Number Publication Date
NL42573C true NL42573C (enrdf_load_stackoverflow)

Family

ID=7391322

Family Applications (1)

Application Number Title Priority Date Filing Date
NL42573D NL42573C (enrdf_load_stackoverflow) 1934-02-15

Country Status (3)

Country Link
DE (1) DE631395C (enrdf_load_stackoverflow)
FR (1) FR796447A (enrdf_load_stackoverflow)
NL (1) NL42573C (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE833334C (de) * 1950-09-14 1952-03-06 Rautenkranz Int Hermann Einrichtung zum Herstellen von Grossbohrloechern, insbesondere fuer bergmaennische Zwecke

Also Published As

Publication number Publication date
DE631395C (de) 1936-06-19
FR796447A (fr) 1936-04-07

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