BE487158A - - Google Patents

Info

Publication number
BE487158A
BE487158A BE487158DA BE487158A BE 487158 A BE487158 A BE 487158A BE 487158D A BE487158D A BE 487158DA BE 487158 A BE487158 A BE 487158A
Authority
BE
Belgium
Prior art keywords
emi
waist
roof
variable
contact
Prior art date
Application number
Other languages
English (en)
French (fr)
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 BE487158A publication Critical patent/BE487158A/fr

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)
  • Electrophonic Musical Instruments (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
BE487158D 1949-04-08 BE487158A (en, 2012)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR59148T 1949-04-08

Publications (1)

Publication Number Publication Date
BE487158A true BE487158A (en, 2012)

Family

ID=8692991

Family Applications (2)

Application Number Title Priority Date Filing Date
BE487158D BE487158A (en, 2012) 1949-04-08
BE494909D BE494909A (en, 2012) 1949-04-08

Family Applications After (1)

Application Number Title Priority Date Filing Date
BE494909D BE494909A (en, 2012) 1949-04-08

Country Status (2)

Country Link
BE (2) BE494909A (en, 2012)
FR (2) FR59148E (en, 2012)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1130143A (fr) * 1955-07-27 1957-01-31 Rallonge articulée pour supports de mines
DE1127301B (de) * 1956-08-14 1962-04-12 Karl Gerlach Kappenverbindung fuer den Strebausbau

Also Published As

Publication number Publication date
BE494909A (en, 2012)
FR59148E (fr) 1954-04-23
FR961507A (en, 2012) 1950-05-13

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