BE623596A - - Google Patents

Info

Publication number
BE623596A
BE623596A BE623596DA BE623596A BE 623596 A BE623596 A BE 623596A BE 623596D A BE623596D A BE 623596DA BE 623596 A BE623596 A BE 623596A
Authority
BE
Belgium
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 BE623596A publication Critical patent/BE623596A/xx
Priority claimed from DEN13037U external-priority patent/DE1843949U/de

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
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/16—Applying separate balls or pellets by the pressure of the drill, so-called shot-drilling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43K—IMPLEMENTS FOR WRITING OR DRAWING
    • B43K24/00—Mechanisms for selecting, projecting, retracting or locking writing units
    • B43K24/10—Mechanisms for selecting, projecting, retracting or locking writing units for selecting, projecting and locking several writing units
    • B43K24/12—Mechanisms for selecting, projecting, retracting or locking writing units for selecting, projecting and locking several writing units operating by means sliding in longitudinally-slotted casings

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
  • Drawing Aids And Blackboards (AREA)
BE623596D 1961-10-14 BE623596A (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEN13037U DE1843949U (de) 1961-10-14 1961-10-14 Verschiebevorrichtung fuer die minentraeger von schreibstiften.
DEN0021729 1962-06-20

Publications (1)

Publication Number Publication Date
BE623596A true BE623596A (zh)

Family

ID=25988595

Family Applications (1)

Application Number Title Priority Date Filing Date
BE623596D BE623596A (zh) 1961-10-14

Country Status (5)

Country Link
BE (1) BE623596A (zh)
DE (1) DE1411932A1 (zh)
FR (1) FR1343021A (zh)
GB (2) GB988403A (zh)
NL (2) NL284258A (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6490987B2 (ja) * 2015-02-27 2019-03-27 株式会社トンボ鉛筆 スライドノック式筆記具

Also Published As

Publication number Publication date
GB1028621A (en) 1966-05-04
NL284258A (zh)
NL287158A (zh)
FR1343021A (fr) 1963-11-15
DE1411932A1 (de) 1968-10-24
GB988403A (en) 1965-04-07

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