BE874985A - SURVEY CROWN - Google Patents

SURVEY CROWN

Info

Publication number
BE874985A
BE874985A BE0/194126A BE194126A BE874985A BE 874985 A BE874985 A BE 874985A BE 0/194126 A BE0/194126 A BE 0/194126A BE 194126 A BE194126 A BE 194126A BE 874985 A BE874985 A BE 874985A
Authority
BE
Belgium
Prior art keywords
crown
survey
survey crown
Prior art date
Application number
BE0/194126A
Other languages
French (fr)
Original Assignee
Diamant Boart Sa
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 Diamant Boart Sa filed Critical Diamant Boart Sa
Priority to BE0/194126A priority Critical patent/BE874985A/en
Publication of BE874985A publication Critical patent/BE874985A/en

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
    • E21B10/00—Drill bits
    • E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
    • E21B10/48—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of core type
BE0/194126A 1979-03-21 1979-03-21 SURVEY CROWN BE874985A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
BE0/194126A BE874985A (en) 1979-03-21 1979-03-21 SURVEY CROWN

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE874985 1979-03-21
BE0/194126A BE874985A (en) 1979-03-21 1979-03-21 SURVEY CROWN

Publications (1)

Publication Number Publication Date
BE874985A true BE874985A (en) 1979-07-16

Family

ID=25651347

Family Applications (1)

Application Number Title Priority Date Filing Date
BE0/194126A BE874985A (en) 1979-03-21 1979-03-21 SURVEY CROWN

Country Status (1)

Country Link
BE (1) BE874985A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3408092A1 (en) * 1984-03-05 1985-09-19 Hilti Ag, Schaan HOLLOW DRILL
EP1297928A1 (en) * 2001-09-28 2003-04-02 Ehwa Diamond Ind. Co., Ltd. Diamond tool

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3408092A1 (en) * 1984-03-05 1985-09-19 Hilti Ag, Schaan HOLLOW DRILL
EP1297928A1 (en) * 2001-09-28 2003-04-02 Ehwa Diamond Ind. Co., Ltd. Diamond tool

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