FR2157275A5 - - Google Patents

Info

Publication number
FR2157275A5
FR2157275A5 FR7138862A FR7138862A FR2157275A5 FR 2157275 A5 FR2157275 A5 FR 2157275A5 FR 7138862 A FR7138862 A FR 7138862A FR 7138862 A FR7138862 A FR 7138862A FR 2157275 A5 FR2157275 A5 FR 2157275A5
Authority
FR
France
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
FR7138862A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR7138862A priority Critical patent/FR2157275A5/fr
Application granted granted Critical
Publication of FR2157275A5 publication Critical patent/FR2157275A5/fr
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
    • E21D23/08—Advancing mechanisms
    • E21D23/081—Advancing mechanisms forming parts of the roof supports

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)
FR7138862A 1971-10-22 1971-10-22 Expired FR2157275A5 (cs)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7138862A FR2157275A5 (cs) 1971-10-22 1971-10-22

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7138862A FR2157275A5 (cs) 1971-10-22 1971-10-22

Publications (1)

Publication Number Publication Date
FR2157275A5 true FR2157275A5 (cs) 1973-06-01

Family

ID=9085052

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7138862A Expired FR2157275A5 (cs) 1971-10-22 1971-10-22

Country Status (1)

Country Link
FR (1) FR2157275A5 (cs)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2372957A1 (fr) * 1976-12-04 1978-06-30 Gewerk Eisenhuette Westfalia Ensemble de soutenement utilisable dans les mines

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2372957A1 (fr) * 1976-12-04 1978-06-30 Gewerk Eisenhuette Westfalia Ensemble de soutenement utilisable dans les mines

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Legal Events

Date Code Title Description
ST Notification of lapse