FR408276A - - Google Patents

Info

Publication number
FR408276A
FR408276A FR408276DA FR408276A FR 408276 A FR408276 A FR 408276A FR 408276D A FR408276D A FR 408276DA FR 408276 A FR408276 A FR 408276A
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 FR408276A publication Critical patent/FR408276A/fr
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/22—Rods or pipes with helical structure

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
FR408276D Expired FR408276A (enrdf_load_html_response)

Publications (1)

Publication Number Publication Date
FR408276A true FR408276A (enrdf_load_html_response) 1900-01-01

Family

ID=1452511

Family Applications (1)

Application Number Title Priority Date Filing Date
FR408276D Expired FR408276A (enrdf_load_html_response)

Country Status (1)

Country Link
FR (1) FR408276A (enrdf_load_html_response)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0361189A1 (de) * 1988-09-12 1990-04-04 Narex Praha, Statni Podnik Bohrwerkzeug mit schraubenförmigem Schaft

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0361189A1 (de) * 1988-09-12 1990-04-04 Narex Praha, Statni Podnik Bohrwerkzeug mit schraubenförmigem Schaft

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