NL88621C - - Google Patents

Info

Publication number
NL88621C
NL88621C NL88621DA NL88621C NL 88621 C NL88621 C NL 88621C NL 88621D A NL88621D A NL 88621DA NL 88621 C NL88621 C NL 88621C
Authority
NL
Netherlands
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 NL88621C publication Critical patent/NL88621C/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)
  • Emergency Lowering Means (AREA)
  • Hooks, Suction Cups, And Attachment By Adhesive Means (AREA)
NL88621D 1951-12-05 NL88621C (en:Method)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1951A0014650 DE975231C (de) 1951-12-05 1951-12-05 Gelenkige Kappenverbindung

Publications (1)

Publication Number Publication Date
NL88621C true NL88621C (en:Method)

Family

ID=6923259

Family Applications (2)

Application Number Title Priority Date Filing Date
NL88621D NL88621C (en:Method) 1951-12-05
NLAANVRAGE7209868,A NL174344B (nl) 1951-12-05 Werkwijze voor het bereiden van een mengsel van catechol en hydrochinon.

Family Applications After (1)

Application Number Title Priority Date Filing Date
NLAANVRAGE7209868,A NL174344B (nl) 1951-12-05 Werkwijze voor het bereiden van een mengsel van catechol en hydrochinon.

Country Status (4)

Country Link
DE (1) DE975231C (en:Method)
FR (1) FR1067366A (en:Method)
GB (1) GB712963A (en:Method)
NL (2) NL174344B (en:Method)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE942322C (de) * 1954-03-16 1956-05-03 Ulrich Wichmann Gelenkverbindung von Kappen
US2915328A (en) * 1957-07-08 1959-12-01 Hugh Wood And Company Ltd Bars for supporting the roof in mines and for like purposes

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE481680A (en:Method) *
BE475032A (en:Method) * 1946-08-28
DE803992C (de) * 1949-07-03 1951-04-16 Wilhelm Reppel Aus aneinandergesetzten Gliedern bestehende Kappe fuer den Grubenausbau, insbesondere den Strebausbau
DE801717C (de) * 1949-07-12 1951-01-22 Mannesmann Ag Kappenverbinder

Also Published As

Publication number Publication date
NL174344B (nl)
FR1067366A (fr) 1954-06-15
DE975231C (de) 1961-10-12
GB712963A (en) 1954-08-04

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