BE649544A - - Google Patents

Info

Publication number
BE649544A
BE649544A BE649544DA BE649544A BE 649544 A BE649544 A BE 649544A BE 649544D A BE649544D A BE 649544DA BE 649544 A BE649544 A BE 649544A
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.)
Filing date
Publication date
Application filed filed Critical
Publication of BE649544A publication Critical patent/BE649544A/xx

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
    • E21D23/0047—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor without essential shifting devices
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
    • E21D23/0052—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor with advancing shifting devices connected therewith

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)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
BE649544D 1963-06-20 1964-06-19 BE649544A (ja)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL294373 1963-06-20

Publications (1)

Publication Number Publication Date
BE649544A true BE649544A (ja) 1964-12-21

Family

ID=19754804

Family Applications (1)

Application Number Title Priority Date Filing Date
BE649544D BE649544A (ja) 1963-06-20 1964-06-19

Country Status (2)

Country Link
BE (1) BE649544A (ja)
GB (1) GB1065667A (ja)

Also Published As

Publication number Publication date
GB1065667A (en) 1967-04-19

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