NL71298C - - Google Patents

Info

Publication number
NL71298C
NL71298C NL71298DA NL71298C NL 71298 C NL71298 C NL 71298C NL 71298D A NL71298D A NL 71298DA NL 71298 C NL71298 C NL 71298C
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 NL71298C publication Critical patent/NL71298C/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)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Load-Engaging Elements For Cranes (AREA)
NL71298D 1951-03-08 NL71298C (enrdf_load_html_response)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL709242X 1951-03-08

Publications (1)

Publication Number Publication Date
NL71298C true NL71298C (enrdf_load_html_response)

Family

ID=19812158

Family Applications (1)

Application Number Title Priority Date Filing Date
NL71298D NL71298C (enrdf_load_html_response) 1951-03-08

Country Status (5)

Country Link
BE (1) BE509688A (enrdf_load_html_response)
DE (1) DE960444C (enrdf_load_html_response)
FR (1) FR1052016A (enrdf_load_html_response)
GB (1) GB709242A (enrdf_load_html_response)
NL (1) NL71298C (enrdf_load_html_response)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1103269B (de) * 1957-05-29 1961-03-30 Dowty Mining Equipment Ltd Hydraulisch betaetigte Abstuetzvorrichtung des Hangenden

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE803992C (de) * 1949-07-03 1951-04-16 Wilhelm Reppel Aus aneinandergesetzten Gliedern bestehende Kappe fuer den Grubenausbau, insbesondere den Strebausbau

Also Published As

Publication number Publication date
DE960444C (de) 1957-03-21
GB709242A (en) 1954-05-19
FR1052016A (fr) 1954-01-20
BE509688A (enrdf_load_html_response)

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