NL42749C - - Google Patents

Info

Publication number
NL42749C
NL42749C NL42749DA NL42749C NL 42749 C NL42749 C NL 42749C NL 42749D A NL42749D A NL 42749DA NL 42749 C NL42749 C NL 42749C
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 NL42749C publication Critical patent/NL42749C/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)
NL42749D 1935-10-14 NL42749C (US20100268047A1-20101021-C00003.png)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR796265T 1935-10-14

Publications (1)

Publication Number Publication Date
NL42749C true NL42749C (US20100268047A1-20101021-C00003.png)

Family

ID=9235047

Family Applications (1)

Application Number Title Priority Date Filing Date
NL42749D NL42749C (US20100268047A1-20101021-C00003.png) 1935-10-14

Country Status (2)

Country Link
FR (1) FR796265A (US20100268047A1-20101021-C00003.png)
NL (1) NL42749C (US20100268047A1-20101021-C00003.png)

Also Published As

Publication number Publication date
FR796265A (fr) 1936-04-03

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