FR416837A - Survey device - Google Patents

Survey device

Info

Publication number
FR416837A
FR416837A FR416837DA FR416837A FR 416837 A FR416837 A FR 416837A FR 416837D A FR416837D A FR 416837DA FR 416837 A FR416837 A FR 416837A
Authority
FR
France
Prior art keywords
survey device
survey
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
Constantin Cantilli
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
Application granted granted Critical
Publication of FR416837A publication Critical patent/FR416837A/en
Expired legal-status Critical Current

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B4/00Drives for drilling, used in the borehole
    • E21B4/04Electric drives
FR416837D 1910-06-06 1910-06-06 Survey device Expired FR416837A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR416837T 1910-06-06

Publications (1)

Publication Number Publication Date
FR416837A true FR416837A (en) 1910-10-29

Family

ID=1460299

Family Applications (1)

Application Number Title Priority Date Filing Date
FR416837D Expired FR416837A (en) 1910-06-06 1910-06-06 Survey device

Country Status (1)

Country Link
FR (1) FR416837A (en)

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