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AU166537B2 - Method and apparatus for drilling deep holes - Google Patents
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AU166537B2 - Method and apparatus for drilling deep holes - Google Patents

Method and apparatus for drilling deep holes

Info

Publication number
AU166537B2
AU166537B2 AU25586/54A AU2558654A AU166537B2 AU 166537 B2 AU166537 B2 AU 166537B2 AU 25586/54 A AU25586/54 A AU 25586/54A AU 2558654 A AU2558654 A AU 2558654A AU 166537 B2 AU166537 B2 AU 166537B2
Authority
AU
Australia
Prior art keywords
deep holes
drilling deep
drilling
holes
deep
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
AU25586/54A
Other versions
AU2558654A (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of AU2558654A publication Critical patent/AU2558654A/en
Publication of AU166537B2 publication Critical patent/AU166537B2/en
Expired legal-status Critical Current

Links

AU25586/54A 1954-03-08 Method and apparatus for drilling deep holes Expired AU166537B2 (en)

Publications (2)

Publication Number Publication Date
AU2558654A AU2558654A (en) 1954-05-13
AU166537B2 true AU166537B2 (en) 1954-05-13

Family

ID=

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