BE546519A - - Google Patents

Info

Publication number
BE546519A
BE546519A BE546519DA BE546519A BE 546519 A BE546519 A BE 546519A BE 546519D A BE546519D A BE 546519DA BE 546519 A BE546519 A BE 546519A
Authority
BE
Belgium
Prior art keywords
desc
page number
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page
Prior art date
Application number
Other languages
English (en)
Publication of BE546519A publication Critical patent/BE546519A/fr

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C27/00—Machines which completely free the mineral from the seam
    • E21C27/10—Machines which completely free the mineral from the seam by both slitting and breaking-down
    • E21C27/12—Machines which completely free the mineral from the seam by both slitting and breaking-down breaking-down effected by acting on the vertical face of the mineral, e.g. by percussive tools
    • E21C27/124—Machines which completely free the mineral from the seam by both slitting and breaking-down breaking-down effected by acting on the vertical face of the mineral, e.g. by percussive tools with rotatable cutters provided with breaking-down members

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Developing Agents For Electrophotography (AREA)
  • Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)

Description


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BE546519D BE546519A (fr)

Publications (1)

Publication Number Publication Date
BE546519A true BE546519A (fr)

Family

ID=173803

Family Applications (1)

Application Number Title Priority Date Filing Date
BE546519D BE546519A (fr)

Country Status (1)

Country Link
BE (1) BE546519A (fr)

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