ATE27332T1 - DRILL. - Google Patents

DRILL.

Info

Publication number
ATE27332T1
ATE27332T1 AT83300939T AT83300939T ATE27332T1 AT E27332 T1 ATE27332 T1 AT E27332T1 AT 83300939 T AT83300939 T AT 83300939T AT 83300939 T AT83300939 T AT 83300939T AT E27332 T1 ATE27332 T1 AT E27332T1
Authority
AT
Austria
Prior art keywords
drill
Prior art date
Application number
AT83300939T
Other languages
German (de)
Inventor
Floyd Walter Becker
Original Assignee
Dualco Mfg 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
Priority claimed from CA000396947A external-priority patent/CA1204428A/en
Priority claimed from CA000396949A external-priority patent/CA1159442A/en
Application filed by Dualco Mfg Ltd filed Critical Dualco Mfg Ltd
Priority claimed from EP83300939A external-priority patent/EP0087917B1/en
Application granted granted Critical
Publication of ATE27332T1 publication Critical patent/ATE27332T1/en

Links

AT83300939T 1982-02-24 1983-02-23 DRILL. ATE27332T1 (en)

Applications Claiming Priority (3)

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

Publications (1)

Publication Number Publication Date
ATE27332T1 true ATE27332T1 (en) 1987-06-15

Family

ID=27167207

Family Applications (1)

Application Number Title Priority Date Filing Date
AT83300939T ATE27332T1 (en) 1982-02-24 1983-02-23 DRILL.

Country Status (1)

Country Link
AT (1) ATE27332T1 (en)

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Legal Events

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