FR991379A - étançon léger réglable pour gisements en dressant - Google Patents

étançon léger réglable pour gisements en dressant

Info

Publication number
FR991379A
FR991379A FR991379DA FR991379A FR 991379 A FR991379 A FR 991379A FR 991379D A FR991379D A FR 991379DA FR 991379 A FR991379 A FR 991379A
Authority
FR
France
Prior art keywords
prop
adjustable lightweight
beds
standing
standing beds
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SAAR MONTANIA GmbH
Original Assignee
SAAR MONTANIA GmbH
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 by SAAR MONTANIA GmbH filed Critical SAAR MONTANIA GmbH
Application granted granted Critical
Publication of FR991379A publication Critical patent/FR991379A/fr
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/14—Telescopic props

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
FR991379D 1949-07-26 1949-07-26 étançon léger réglable pour gisements en dressant Expired FR991379A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR991379T 1949-07-26

Publications (1)

Publication Number Publication Date
FR991379A true FR991379A (fr) 1951-10-04

Family

ID=9551699

Family Applications (1)

Application Number Title Priority Date Filing Date
FR991379D Expired FR991379A (fr) 1949-07-26 1949-07-26 étançon léger réglable pour gisements en dressant

Country Status (1)

Country Link
FR (1) FR991379A (fr)

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