BE509688A - - Google Patents

Info

Publication number
BE509688A
BE509688A BE509688DA BE509688A BE 509688 A BE509688 A BE 509688A BE 509688D A BE509688D A BE 509688DA BE 509688 A BE509688 A BE 509688A
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 BE509688A publication Critical patent/BE509688A/xx

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D17/00Caps for supporting mine roofs
    • E21D17/02Cantilever extension or similar protecting devices
    • E21D17/08Cap joints for obtaining a coal-face free of pit-props
    • E21D17/086Cap 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)
BE509688D 1951-03-08 BE509688A (en:Method)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
BE509688A true BE509688A (en:Method)

Family

ID=19812158

Family Applications (1)

Application Number Title Priority Date Filing Date
BE509688D BE509688A (en:Method) 1951-03-08

Country Status (5)

Country Link
BE (1) BE509688A (en:Method)
DE (1) DE960444C (en:Method)
FR (1) FR1052016A (en:Method)
GB (1) GB709242A (en:Method)
NL (1) NL71298C (en:Method)

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
FR1052016A (fr) 1954-01-20
NL71298C (en:Method)
DE960444C (de) 1957-03-21
GB709242A (en) 1954-05-19

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