NL89705C - - Google Patents

Info

Publication number
NL89705C
NL89705C NL89705DA NL89705C NL 89705 C NL89705 C NL 89705C NL 89705D A NL89705D A NL 89705DA NL 89705 C NL89705 C NL 89705C
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 NL89705C publication Critical patent/NL89705C/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)
  • Connection Of Plates (AREA)
  • Joining Of Building Structures In Genera (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
NL89705D 1953-04-15 NL89705C (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE406561 1953-04-15

Publications (1)

Publication Number Publication Date
NL89705C true NL89705C (enrdf_load_stackoverflow)

Family

ID=45816025

Family Applications (1)

Application Number Title Priority Date Filing Date
NL89705D NL89705C (enrdf_load_stackoverflow) 1953-04-15

Country Status (5)

Country Link
BE (1) BE519224A (enrdf_load_stackoverflow)
DE (1) DE1171383B (enrdf_load_stackoverflow)
FR (1) FR1096149A (enrdf_load_stackoverflow)
GB (1) GB758867A (enrdf_load_stackoverflow)
NL (1) NL89705C (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1279170A (en) * 1970-11-16 1972-06-28 Hunter Douglas Curtain track fittings

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE804317C (de) * 1949-03-22 1951-04-19 Otto Leppak Verfahren zur Schaffung einer stempelfreien Abbaufront beim eisernen Strebausbau
DE835586C (de) * 1949-11-25 1952-04-03 Hans Gerlach Grubenausbau, insbesondere fuer eine stempelfreie Abbaufront
DE933325C (de) * 1952-01-16 1955-09-22 Gutehoffnungshuette Sterkrade Schraegverzahnte Gelenkverbindung

Also Published As

Publication number Publication date
GB758867A (en) 1956-10-10
FR1096149A (fr) 1955-06-09
DE1171383B (de) 1964-06-04
BE519224A (enrdf_load_stackoverflow)

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