FR533298A - - Google Patents

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Publication number
FR533298A
FR533298A FR533298DA FR533298A FR 533298 A FR533298 A FR 533298A FR 533298D A FR533298D A FR 533298DA FR 533298 A FR533298 A FR 533298A
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 FR533298A publication Critical patent/FR533298A/fr
Expired legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/10—Making by using boring or cutting machines
    • E21D9/106—Making by using boring or cutting machines with percussive tools, e.g. pick-hammers

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
FR533298D Expired FR533298A (enrdf_load_html_response)

Publications (1)

Publication Number Publication Date
FR533298A true FR533298A (enrdf_load_html_response) 1922-02-27

Family

ID=1537119

Family Applications (1)

Application Number Title Priority Date Filing Date
FR533298D Expired FR533298A (enrdf_load_html_response)

Country Status (1)

Country Link
FR (1) FR533298A (enrdf_load_html_response)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0159135A1 (en) * 1984-03-12 1985-10-23 Roger Masse Method and apparatus for drilling hard material

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0159135A1 (en) * 1984-03-12 1985-10-23 Roger Masse Method and apparatus for drilling hard material
US4682819A (en) * 1984-03-12 1987-07-28 Roger Masse Method and apparatus for drilling hard material

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