NL69243C - - Google Patents

Info

Publication number
NL69243C
NL69243C NL128634A NL128634A NL69243C NL 69243 C NL69243 C NL 69243C NL 128634 A NL128634 A NL 128634A NL 128634 A NL128634 A NL 128634A NL 69243 C NL69243 C NL 69243C
Authority
NL
Netherlands
Application number
NL128634A
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.)
Filing date
Publication date
Application filed filed Critical
Priority to NL128634A priority Critical patent/NL69243C/nl
Priority to BE478763A priority patent/BE478763A/nl
Priority to FR958808D priority patent/FR958808A/fr
Application granted granted Critical
Publication of NL69243C publication Critical patent/NL69243C/nl

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/14—Telescopic props
    • E21D15/28—Telescopic props with parts held relatively to each other by friction or gripping
    • E21D15/285—Telescopic props with parts held relatively to each other by friction or gripping by means of wedges or wedge combinations

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
NL128634A 1946-11-07 1946-11-07 NL69243C (nl)

Priority Applications (3)

Application Number Priority Date Filing Date Title
NL128634A NL69243C (nl) 1946-11-07 1946-11-07
BE478763A BE478763A (nl) 1946-11-07 1947-12-27
FR958808D FR958808A (nl) 1946-11-07 1947-12-30

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL128634A NL69243C (nl) 1946-11-07 1946-11-07

Publications (1)

Publication Number Publication Date
NL69243C true NL69243C (nl) 1951-12-16

Family

ID=1821563

Family Applications (1)

Application Number Title Priority Date Filing Date
NL128634A NL69243C (nl) 1946-11-07 1946-11-07

Country Status (3)

Country Link
BE (1) BE478763A (nl)
FR (1) FR958808A (nl)
NL (1) NL69243C (nl)

Also Published As

Publication number Publication date
FR958808A (nl) 1950-03-21
BE478763A (nl) 1948-01-31

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