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AU482693B2 - Hydraulically operated rotary percussive drilling apparatus - Google Patents

Hydraulically operated rotary percussive drilling apparatus

Info

Publication number
AU482693B2
AU482693B2 AU74454/74A AU7445474A AU482693B2 AU 482693 B2 AU482693 B2 AU 482693B2 AU 74454/74 A AU74454/74 A AU 74454/74A AU 7445474 A AU7445474 A AU 7445474A AU 482693 B2 AU482693 B2 AU 482693B2
Authority
AU
Australia
Prior art keywords
hydraulically operated
drilling apparatus
operated rotary
percussive drilling
rotary percussive
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
AU74454/74A
Other versions
AU7445474A (en
Inventor
Raymond Perraud Jean
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.)
D'etude Et Deconstruction De Machines Pour Toutes Industries Ste
Original Assignee
D'etude Et Deconstruction De Machines Pour Toutes Industries Ste
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 FR7340572A external-priority patent/FR2250014A1/fr
Application filed by D'etude Et Deconstruction De Machines Pour Toutes Industries Ste filed Critical D'etude Et Deconstruction De Machines Pour Toutes Industries Ste
Application granted granted Critical
Publication of AU7445474A publication Critical patent/AU7445474A/en
Publication of AU482693B2 publication Critical patent/AU482693B2/en
Expired legal-status Critical Current

Links

AU74454/74A 1973-11-07 1974-10-17 Hydraulically operated rotary percussive drilling apparatus Expired AU482693B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FRFR73405 1973-11-07
FR7340572A FR2250014A1 (en) 1973-11-07 1973-11-07

Publications (2)

Publication Number Publication Date
AU7445474A AU7445474A (en) 1976-04-29
AU482693B2 true AU482693B2 (en) 1976-04-29

Family

ID=

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