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AU490413B2 - Earth boring machine positioning system - Google Patents
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AU490413B2 - Earth boring machine positioning system - Google Patents

Earth boring machine positioning system

Info

Publication number
AU490413B2
AU490413B2 AU81750/75A AU8175075A AU490413B2 AU 490413 B2 AU490413 B2 AU 490413B2 AU 81750/75 A AU81750/75 A AU 81750/75A AU 8175075 A AU8175075 A AU 8175075A AU 490413 B2 AU490413 B2 AU 490413B2
Authority
AU
Australia
Prior art keywords
positioning system
boring machine
earth boring
machine positioning
earth
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
AU81750/75A
Other versions
AU8175075A (en
Inventor
Leroy Williams Ross Weldon Walker Raymond
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.)
Dresser Industries Inc
Original Assignee
Dresser Industries Inc
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 US484046A external-priority patent/US3905426A/en
Application filed by Dresser Industries Inc filed Critical Dresser Industries Inc
Application granted granted Critical
Publication of AU8175075A publication Critical patent/AU8175075A/en
Publication of AU490413B2 publication Critical patent/AU490413B2/en
Expired legal-status Critical Current

Links

AU81750/75A 1974-06-28 1975-06-02 Earth boring machine positioning system Expired AU490413B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
USUS484046 1965-08-31
US484046A US3905426A (en) 1974-06-28 1974-06-28 Earth boring machine positioning system

Publications (2)

Publication Number Publication Date
AU8175075A AU8175075A (en) 1976-12-09
AU490413B2 true AU490413B2 (en) 1976-12-09

Family

ID=

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