FR490187A - Polling machine - Google Patents

Polling machine

Info

Publication number
FR490187A
FR490187A FR490187DA FR490187A FR 490187 A FR490187 A FR 490187A FR 490187D A FR490187D A FR 490187DA FR 490187 A FR490187 A FR 490187A
Authority
FR
France
Prior art keywords
polling machine
polling
machine
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)
Inventor
Carlo Vigano'
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.)
CARLO VIGANO'
Original Assignee
CARLO VIGANO'
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 CARLO VIGANO' filed Critical CARLO VIGANO'
Application granted granted Critical
Publication of FR490187A publication Critical patent/FR490187A/en
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
    • E21B7/00—Special methods or apparatus for drilling

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
FR490187D 1917-05-21 1918-05-21 Polling machine Expired FR490187A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT490187X 1917-05-21

Publications (1)

Publication Number Publication Date
FR490187A true FR490187A (en) 1919-04-05

Family

ID=1526352

Family Applications (1)

Application Number Title Priority Date Filing Date
FR490187D Expired FR490187A (en) 1917-05-21 1918-05-21 Polling machine

Country Status (1)

Country Link
FR (1) FR490187A (en)

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