BE569133A - - Google Patents

Info

Publication number
BE569133A
BE569133A BE569133DA BE569133A BE 569133 A BE569133 A BE 569133A BE 569133D A BE569133D A BE 569133DA BE 569133 A BE569133 A BE 569133A
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 BE569133A publication Critical patent/BE569133A/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)
  • Conveying And Assembling Of Building Elements In Situ (AREA)
BE569133D 1957-07-04 BE569133A (enrdf_load_html_response)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2112157A GB891140A (en) 1957-07-04 1957-07-04 Improvements in or relating to mine roof supporting bars

Publications (1)

Publication Number Publication Date
BE569133A true BE569133A (enrdf_load_html_response)

Family

ID=10157548

Family Applications (1)

Application Number Title Priority Date Filing Date
BE569133D BE569133A (enrdf_load_html_response) 1957-07-04

Country Status (4)

Country Link
BE (1) BE569133A (enrdf_load_html_response)
FR (1) FR1207659A (enrdf_load_html_response)
GB (1) GB891140A (enrdf_load_html_response)
NL (1) NL229339A (enrdf_load_html_response)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3320751A (en) * 1962-01-29 1967-05-23 Groetschel Karl Maria Support

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3320751A (en) * 1962-01-29 1967-05-23 Groetschel Karl Maria Support

Also Published As

Publication number Publication date
GB891140A (en) 1962-03-14
FR1207659A (fr) 1960-02-18
NL229339A (enrdf_load_html_response)

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