FR579305A - - Google Patents

Info

Publication number
FR579305A
FR579305A FR579305DA FR579305A FR 579305 A FR579305 A FR 579305A FR 579305D A FR579305D A FR 579305DA FR 579305 A FR579305 A FR 579305A
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
Other languages
French (fr)
Publication date
Application granted granted Critical
Publication of FR579305A publication Critical patent/FR579305A/fr
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D1/00—Sinking shafts
    • E21D1/03—Sinking shafts mechanically, e.g. by loading shovels or loading buckets, scraping devices, conveying screws
    • E21D1/06—Sinking shafts mechanically, e.g. by loading shovels or loading buckets, scraping devices, conveying screws with shaft-boring cutters

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
FR579305D Expired FR579305A (enrdf_load_html_response)

Publications (1)

Publication Number Publication Date
FR579305A true FR579305A (enrdf_load_html_response) 1924-10-14

Family

ID=1539520

Family Applications (1)

Application Number Title Priority Date Filing Date
FR579305D Expired FR579305A (enrdf_load_html_response)

Country Status (1)

Country Link
FR (1) FR579305A (enrdf_load_html_response)

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