NL73200C - - Google Patents

Info

Publication number
NL73200C
NL73200C NL73200DA NL73200C NL 73200 C NL73200 C NL 73200C NL 73200D A NL73200D A NL 73200DA NL 73200 C NL73200 C NL 73200C
Authority
NL
Netherlands
Application number
Publication of NL73200C publication Critical patent/NL73200C/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
    • E21D17/0213—Assembling devices for pivoting caps upwardly

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)
NL73200D NL73200C (en:Method)

Publications (1)

Publication Number Publication Date
NL73200C true NL73200C (en:Method)

Family

ID=1824096

Family Applications (1)

Application Number Title Priority Date Filing Date
NL73200D NL73200C (en:Method)

Country Status (1)

Country Link
NL (1) NL73200C (en:Method)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2991104A (en) * 1948-07-08 1961-07-04 Eisenwerk Wanheim G M B H Fa Connecting structure for beams of a roof support or the like

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2991104A (en) * 1948-07-08 1961-07-04 Eisenwerk Wanheim G M B H Fa Connecting structure for beams of a roof support or the like

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NL73200C (en:Method)