FR979543A - Mobile support for mines - Google Patents

Mobile support for mines

Info

Publication number
FR979543A
FR979543A FR979543DA FR979543A FR 979543 A FR979543 A FR 979543A FR 979543D A FR979543D A FR 979543DA FR 979543 A FR979543 A FR 979543A
Authority
FR
France
Prior art keywords
mines
mobile support
mobile
support
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
French (fr)
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.)
RECH S IND ET MINIERES SOC ET
Original Assignee
RECH S IND ET MINIERES SOC ET
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 RECH S IND ET MINIERES SOC ET filed Critical RECH S IND ET MINIERES SOC ET
Application granted granted Critical
Publication of FR979543A publication Critical patent/FR979543A/en
Expired legal-status Critical Current

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
    • E21D17/0213—Assembling devices for pivoting caps upwardly

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)
FR979543D 1947-10-23 1947-10-23 Mobile support for mines Expired FR979543A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR979543T 1947-10-23

Publications (1)

Publication Number Publication Date
FR979543A true FR979543A (en) 1951-04-27

Family

ID=9521231

Family Applications (1)

Application Number Title Priority Date Filing Date
FR979543D Expired FR979543A (en) 1947-10-23 1947-10-23 Mobile support for mines

Country Status (1)

Country Link
FR (1) FR979543A (en)

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