NL87581C - - Google Patents

Info

Publication number
NL87581C
NL87581C NL87581DA NL87581C NL 87581 C NL87581 C NL 87581C NL 87581D A NL87581D A NL 87581DA NL 87581 C NL87581 C NL 87581C
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 NL87581C publication Critical patent/NL87581C/xx

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B19/00Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
    • E21B19/08Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods
    • E21B19/086Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods with a fluid-actuated cylinder

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)
NL87581D 1951-04-05 NL87581C (en:Method)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1053123X 1951-04-05

Publications (1)

Publication Number Publication Date
NL87581C true NL87581C (en:Method)

Family

ID=7717685

Family Applications (2)

Application Number Title Priority Date Filing Date
NL87581D NL87581C (en:Method) 1951-04-05
NL7709718.A NL167484B (nl) 1951-04-05 Linnengoedstrijkmachine voor huishoudelijk gebruik.

Family Applications After (1)

Application Number Title Priority Date Filing Date
NL7709718.A NL167484B (nl) 1951-04-05 Linnengoedstrijkmachine voor huishoudelijk gebruik.

Country Status (3)

Country Link
BE (1) BE510410A (en:Method)
FR (1) FR1053123A (en:Method)
NL (2) NL167484B (en:Method)

Also Published As

Publication number Publication date
FR1053123A (fr) 1954-02-01
NL167484B (nl)
BE510410A (en:Method)

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