ATE49453T1 - Bohrrohr. - Google Patents

Bohrrohr.

Info

Publication number
ATE49453T1
ATE49453T1 AT85106086T AT85106086T ATE49453T1 AT E49453 T1 ATE49453 T1 AT E49453T1 AT 85106086 T AT85106086 T AT 85106086T AT 85106086 T AT85106086 T AT 85106086T AT E49453 T1 ATE49453 T1 AT E49453T1
Authority
AT
Austria
Prior art keywords
drill tube
drill
tube
Prior art date
Application number
AT85106086T
Other languages
English (en)
Inventor
Floyd Walter Becker
Original Assignee
Drill Systems Int
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 CA000396949A external-priority patent/CA1159442A/en
Priority claimed from CA000396947A external-priority patent/CA1204428A/en
Application filed by Drill Systems Int filed Critical Drill Systems Int
Priority claimed from EP83300939A external-priority patent/EP0087917B1/de
Application granted granted Critical
Publication of ATE49453T1 publication Critical patent/ATE49453T1/de

Links

AT85106086T 1982-02-24 1983-02-23 Bohrrohr. ATE49453T1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CA000396949A CA1159442A (en) 1982-02-24 1982-02-24 Dual-wall drill pipe
CA000396947A CA1204428A (en) 1982-02-24 1982-02-24 Earth drilling apparatus
EP83300939A EP0087917B1 (de) 1982-02-24 1983-02-23 Bohrapparat
EP19850106086 EP0165479B1 (de) 1982-02-24 1983-02-23 Bohrrohr

Publications (1)

Publication Number Publication Date
ATE49453T1 true ATE49453T1 (de) 1990-01-15

Family

ID=27426340

Family Applications (1)

Application Number Title Priority Date Filing Date
AT85106086T ATE49453T1 (de) 1982-02-24 1983-02-23 Bohrrohr.

Country Status (1)

Country Link
AT (1) ATE49453T1 (de)

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Legal Events

Date Code Title Description
RER Ceased as to paragraph 5 lit. 3 law introducing patent treaties