DK116651B - Dobbeltvægget borerør til et slagboreapparat. - Google Patents

Dobbeltvægget borerør til et slagboreapparat.

Info

Publication number
DK116651B
DK116651B DK664867A DK664867A DK116651B DK 116651 B DK116651 B DK 116651B DK 664867 A DK664867 A DK 664867A DK 664867 A DK664867 A DK 664867A DK 116651 B DK116651 B DK 116651B
Authority
DK
Denmark
Prior art keywords
drill
double
walled
impact
pipe
Prior art date
Application number
DK664867A
Other languages
English (en)
Inventor
N Becker
F Becker
Original Assignee
Becker Drilling Ltd
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 Becker Drilling Ltd filed Critical Becker Drilling Ltd
Priority to DK664867A priority Critical patent/DK116651B/da
Publication of DK116651B publication Critical patent/DK116651B/da

Links

DK664867A 1967-12-29 1967-12-29 Dobbeltvægget borerør til et slagboreapparat. DK116651B (da)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DK664867A DK116651B (da) 1967-12-29 1967-12-29 Dobbeltvægget borerør til et slagboreapparat.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DK664867A DK116651B (da) 1967-12-29 1967-12-29 Dobbeltvægget borerør til et slagboreapparat.

Publications (1)

Publication Number Publication Date
DK116651B true DK116651B (da) 1970-02-02

Family

ID=8148956

Family Applications (1)

Application Number Title Priority Date Filing Date
DK664867A DK116651B (da) 1967-12-29 1967-12-29 Dobbeltvægget borerør til et slagboreapparat.

Country Status (1)

Country Link
DK (1) DK116651B (da)

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