BE496301A - - Google Patents

Info

Publication number
BE496301A
BE496301A BE496301DA BE496301A BE 496301 A BE496301 A BE 496301A BE 496301D A BE496301D A BE 496301DA BE 496301 A BE496301 A BE 496301A
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 BE496301A publication Critical patent/BE496301A/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)
  • Bridges Or Land Bridges (AREA)
BE496301D 1950-03-09 BE496301A (enrdf_load_html_response)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE674397X 1950-03-09

Publications (1)

Publication Number Publication Date
BE496301A true BE496301A (enrdf_load_html_response)

Family

ID=6591034

Family Applications (1)

Application Number Title Priority Date Filing Date
BE496301D BE496301A (enrdf_load_html_response) 1950-03-09

Country Status (4)

Country Link
BE (1) BE496301A (enrdf_load_html_response)
FR (1) FR1025194A (enrdf_load_html_response)
GB (1) GB674397A (enrdf_load_html_response)
NL (1) NL72424C (enrdf_load_html_response)

Also Published As

Publication number Publication date
GB674397A (en) 1952-06-25
FR1025194A (fr) 1953-04-13
NL72424C (enrdf_load_html_response)

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