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AU234301B2 - Improvement in or relating to drilling tools - Google Patents
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AU234301B2 - Improvement in or relating to drilling tools - Google Patents

Improvement in or relating to drilling tools

Info

Publication number
AU234301B2
AU234301B2 AU45724/59A AU4572459A AU234301B2 AU 234301 B2 AU234301 B2 AU 234301B2 AU 45724/59 A AU45724/59 A AU 45724/59A AU 4572459 A AU4572459 A AU 4572459A AU 234301 B2 AU234301 B2 AU 234301B2
Authority
AU
Australia
Prior art keywords
relating
improvement
drilling tools
drilling
tools
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
AU45724/59A
Other versions
AU4572459A (en
Inventor
Geovanni Marcheselli Or.
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.)
Anness S
Original Assignee
Anness S
Filing date
Publication date
Application filed by Anness S filed Critical Anness S
Application granted granted Critical
Publication of AU4572459A publication Critical patent/AU4572459A/en
Publication of AU234301B2 publication Critical patent/AU234301B2/en
Expired legal-status Critical Current

Links

AU45724/59A 1959-02-09 Improvement in or relating to drilling tools Expired AU234301B2 (en)

Publications (2)

Publication Number Publication Date
AU4572459A AU4572459A (en) 1959-08-13
AU234301B2 true AU234301B2 (en) 1959-08-13

Family

ID=

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