NL70416C - - Google Patents

Info

Publication number
NL70416C
NL70416C NL70416DA NL70416C NL 70416 C NL70416 C NL 70416C NL 70416D A NL70416D A NL 70416DA NL 70416 C NL70416 C NL 70416C
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 NL70416C publication Critical patent/NL70416C/xx

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D17/00—Caps for supporting mine roofs
    • E21D17/02—Cantilever extension or similar protecting devices
    • E21D17/08—Cap joints for obtaining a coal-face free of pit-props
    • E21D17/086—Cap joints for obtaining a coal-face free of pit-props or articulated type

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Hooks, Suction Cups, And Attachment By Adhesive Means (AREA)
  • Component Parts Of Construction Machinery (AREA)
NL70416D 1948-11-19 NL70416C (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL670826X 1948-11-19

Publications (1)

Publication Number Publication Date
NL70416C true NL70416C (enrdf_load_stackoverflow)

Family

ID=19800430

Family Applications (2)

Application Number Title Priority Date Filing Date
NL68863D NL68863C (enrdf_load_stackoverflow) 1948-11-19
NL70416D NL70416C (enrdf_load_stackoverflow) 1948-11-19

Family Applications Before (1)

Application Number Title Priority Date Filing Date
NL68863D NL68863C (enrdf_load_stackoverflow) 1948-11-19

Country Status (5)

Country Link
BE (1) BE492242A (enrdf_load_stackoverflow)
DE (1) DE815182C (enrdf_load_stackoverflow)
FR (1) FR1003951A (enrdf_load_stackoverflow)
GB (1) GB670826A (enrdf_load_stackoverflow)
NL (2) NL70416C (enrdf_load_stackoverflow)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1211574B (de) * 1958-05-30 1966-03-03 Ludwig Vanwersch Ausbaukappe fuer den Grubenbetrieb
DE1198770B (de) * 1961-02-09 1965-08-19 Heinrich Pierburg Fa Vorpfaendgelenkkappe, insbesondere fuer den Strebausbau

Also Published As

Publication number Publication date
NL68863C (enrdf_load_stackoverflow)
BE492242A (enrdf_load_stackoverflow)
DE815182C (de) 1951-10-01
GB670826A (en) 1952-04-23
FR1003951A (fr) 1952-03-24

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