AU479248B2 - Borehole hammer drill - Google Patents

Borehole hammer drill

Info

Publication number
AU479248B2
AU479248B2 AU70568/74A AU7056874A AU479248B2 AU 479248 B2 AU479248 B2 AU 479248B2 AU 70568/74 A AU70568/74 A AU 70568/74A AU 7056874 A AU7056874 A AU 7056874A AU 479248 B2 AU479248 B2 AU 479248B2
Authority
AU
Australia
Prior art keywords
hammer drill
borehole
borehole hammer
drill
hammer
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
AU70568/74A
Other versions
AU7056874A (en
Inventor
Theodore James Roscoe, Jr
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.)
Bakerdrill Inc
Original Assignee
Bakerdrill 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 US387481A external-priority patent/US3896886A/en
Application filed by Bakerdrill Inc filed Critical Bakerdrill Inc
Application granted granted Critical
Publication of AU7056874A publication Critical patent/AU7056874A/en
Publication of AU479248B2 publication Critical patent/AU479248B2/en
Expired legal-status Critical Current

Links

AU70568/74A 1973-08-10 1974-06-27 Borehole hammer drill Expired AU479248B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
USUS387481 1973-08-10
US387481A US3896886A (en) 1973-08-10 1973-08-10 Bore hole hammer drill

Publications (2)

Publication Number Publication Date
AU7056874A AU7056874A (en) 1976-01-08
AU479248B2 true AU479248B2 (en) 1976-01-08

Family

ID=

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