NL42021C - - Google Patents

Info

Publication number
NL42021C
NL42021C NL42021DA NL42021C NL 42021 C NL42021 C NL 42021C NL 42021D A NL42021D A NL 42021DA NL 42021 C NL42021 C NL 42021C
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 NL42021C publication Critical patent/NL42021C/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)
NL42021D 1935-02-27 NL42021C (enrdf_load_html_response)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE800360X 1935-02-27

Publications (1)

Publication Number Publication Date
NL42021C true NL42021C (enrdf_load_html_response)

Family

ID=6712774

Family Applications (1)

Application Number Title Priority Date Filing Date
NL42021D NL42021C (enrdf_load_html_response) 1935-02-27

Country Status (2)

Country Link
FR (1) FR800360A (enrdf_load_html_response)
NL (1) NL42021C (enrdf_load_html_response)

Also Published As

Publication number Publication date
FR800360A (fr) 1936-07-03

Similar Documents

Publication Publication Date Title
BE402725A (enrdf_load_html_response)
NL42021C (enrdf_load_html_response)
BE404520A (enrdf_load_html_response)
BE405881A (enrdf_load_html_response)
BE407131A (enrdf_load_html_response)
BE407302A (enrdf_load_html_response)
BE407388A (enrdf_load_html_response)
BE407411A (enrdf_load_html_response)
BE407478A (enrdf_load_html_response)
BE407487A (enrdf_load_html_response)
BE407491A (enrdf_load_html_response)
BE407519A (enrdf_load_html_response)
BE407622A (enrdf_load_html_response)
BE407630A (enrdf_load_html_response)
BE407652A (enrdf_load_html_response)
BE407653A (enrdf_load_html_response)
BE407703A (enrdf_load_html_response)
BE407774A (enrdf_load_html_response)
BE407804A (enrdf_load_html_response)
BE407883A (enrdf_load_html_response)
BE408024A (enrdf_load_html_response)
BE408083A (enrdf_load_html_response)
BE408090A (enrdf_load_html_response)
BE408096A (enrdf_load_html_response)
BE408282A (enrdf_load_html_response)