BE514563A - - Google Patents

Info

Publication number
BE514563A
BE514563A BE514563DA BE514563A BE 514563 A BE514563 A BE 514563A BE 514563D A BE514563D A BE 514563DA BE 514563 A BE514563 A BE 514563A
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 BE514563A publication Critical patent/BE514563A/xx
Priority to BE769430X priority Critical

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH 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
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D17/00Caps for supporting mine roofs
    • E21D17/01Caps for supporting mine roofs characterised by the shape of the cap, e.g. of specified cross-section
BE514563D 1952-10-01 BE514563A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
BE769430X 1952-10-01

Publications (1)

Publication Number Publication Date
BE514563A true BE514563A (en)

Family

ID=3880140

Family Applications (3)

Application Number Title Priority Date Filing Date
BE514563D BE514563A (en) 1952-10-01
BE514564D BE514564A (en) 1952-10-01
BE531878D BE531878A (en) 1952-10-01

Family Applications After (2)

Application Number Title Priority Date Filing Date
BE514564D BE514564A (en) 1952-10-01
BE531878D BE531878A (en) 1952-10-01

Country Status (4)

Country Link
BE (3) BE531878A (en)
DE (1) DE1102078B (en)
FR (1) FR1087566A (en)
GB (1) GB769430A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5839690A (en) * 1990-06-11 1998-11-24 Blanchette; David John Inertial acceleration aircraft

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE199149C (en) * 1954-01-29
WO2006076828A1 (en) * 2005-01-21 2006-07-27 Zeyu Li A hydraulic roof support

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5839690A (en) * 1990-06-11 1998-11-24 Blanchette; David John Inertial acceleration aircraft

Also Published As

Publication number Publication date
BE514564A (en)
FR1087566A (en) 1955-02-25
BE531878A (en)
DE1102078B (en) 1961-03-16
GB769430A (en) 1957-03-06

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