FR480110A - Improvements to instruments used to mark the contour of drilled holes - Google Patents

Improvements to instruments used to mark the contour of drilled holes

Info

Publication number
FR480110A
FR480110A FR480110A FR480110DA FR480110A FR 480110 A FR480110 A FR 480110A FR 480110 A FR480110 A FR 480110A FR 480110D A FR480110D A FR 480110DA FR 480110 A FR480110 A FR 480110A
Authority
FR
France
Prior art keywords
contour
mark
instruments used
drilled holes
drilled
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
FR480110A
Other languages
French (fr)
Inventor
Charles Broe Galvin
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 FR480110A publication Critical patent/FR480110A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B47/00—Survey of boreholes or wells
    • E21B47/002—Survey of boreholes or wells by visual inspection
FR480110A 1915-05-18 1915-10-30 Improvements to instruments used to mark the contour of drilled holes Expired FR480110A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US480110XA 1915-05-18 1915-05-18

Publications (1)

Publication Number Publication Date
FR480110A true FR480110A (en) 1916-06-22

Family

ID=1517371

Family Applications (1)

Application Number Title Priority Date Filing Date
FR480110A Expired FR480110A (en) 1915-05-18 1915-10-30 Improvements to instruments used to mark the contour of drilled holes

Country Status (1)

Country Link
FR (1) FR480110A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2930137A (en) * 1954-08-04 1960-03-29 Jan J Arps Earth borehole crookedness detection and indication

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2930137A (en) * 1954-08-04 1960-03-29 Jan J Arps Earth borehole crookedness detection and indication

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