ATE20376T1 - CORE DRILLING AND DEEP HOLE DRILLING HEAD. - Google Patents

CORE DRILLING AND DEEP HOLE DRILLING HEAD.

Info

Publication number
ATE20376T1
ATE20376T1 AT83200741T AT83200741T ATE20376T1 AT E20376 T1 ATE20376 T1 AT E20376T1 AT 83200741 T AT83200741 T AT 83200741T AT 83200741 T AT83200741 T AT 83200741T AT E20376 T1 ATE20376 T1 AT E20376T1
Authority
AT
Austria
Prior art keywords
drilling
deep hole
core
head
hole drilling
Prior art date
Application number
AT83200741T
Other languages
German (de)
Inventor
Nicoll Archibald Drum Campbell
Henry Brooke Dyer
Rainer Dietrich
Cornelius Phaal
Douglas James Reid
Original Assignee
De Beers Ind Diamond
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
Priority claimed from ZA784716A external-priority patent/ZA784716B/en
Application filed by De Beers Ind Diamond filed Critical De Beers Ind Diamond
Priority claimed from EP79301629A external-priority patent/EP0009315B1/en
Application granted granted Critical
Publication of ATE20376T1 publication Critical patent/ATE20376T1/en

Links

AT83200741T 1978-08-18 1979-08-13 CORE DRILLING AND DEEP HOLE DRILLING HEAD. ATE20376T1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
ZA784716A ZA784716B (en) 1978-08-18 1978-08-18 A method of making tool inserts
ZA787087 1978-12-19
ZA787291 1978-12-27
ZA79814 1979-02-21
EP79301629A EP0009315B1 (en) 1978-08-18 1979-08-13 Method of making tool inserts, wire-drawing die blank and drill bit comprising such inserts

Publications (1)

Publication Number Publication Date
ATE20376T1 true ATE20376T1 (en) 1986-06-15

Family

ID=27513130

Family Applications (2)

Application Number Title Priority Date Filing Date
AT79301629T ATE6135T1 (en) 1978-08-18 1979-08-13 PROCESS FOR MANUFACTURE OF TOOL INSERTS, WIRE DRAWING DIE AND DRILLING TOOL CONTAINING SUCH TOOL INSERTS.
AT83200741T ATE20376T1 (en) 1978-08-18 1979-08-13 CORE DRILLING AND DEEP HOLE DRILLING HEAD.

Family Applications Before (1)

Application Number Title Priority Date Filing Date
AT79301629T ATE6135T1 (en) 1978-08-18 1979-08-13 PROCESS FOR MANUFACTURE OF TOOL INSERTS, WIRE DRAWING DIE AND DRILLING TOOL CONTAINING SUCH TOOL INSERTS.

Country Status (2)

Country Link
AT (2) ATE6135T1 (en)
DE (1) DE2967604D1 (en)

Also Published As

Publication number Publication date
DE2967604D1 (en) 1986-07-17
ATE6135T1 (en) 1984-02-15

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